The final speed of the train can be found using the formula:
final speed = initial speed + acceleration x time
Since the train starts from rest (initial speed = 0), we can simplify the formula to:
final speed = acceleration x time
Plugging in the given values, we get:
final speed = 3 km/h/s x 35 s = 105 km/h
Therefore, the final speed of the train is 105 km/h.
b. The total distance traveled by the train during this period of constant acceleration can be found using the formula:
distance = (initial speed x time) + (1/2 x acceleration x time^2)
Again, since the train starts from rest (initial speed = 0), we can simplify the formula to:
distance = 1/2 x acceleration x time^2
Plugging in the given values, we get:
distance = 1/2 x 3 km/h/s x (35 s)^2 = 1837.5 meters
Therefore, the total distance traveled by the train during this period of constant acceleration is 1837.5 meters. Note that we converted the units from km and hours to meters and seconds for consistency in the formula.
Learn more about speed here:
https://brainly.com/question/28224010
#SPJ11
in a wire with a 1.71 mm2 cross-sectional area, 5.63×1020 electrons flow past any point during 2.59 s. what is the current in the wire? (A) Find the current density? (A/m^2)
The number of electrons that pass through any point in the wire during a time interval is given by: n = Q/e
where Q is the charge passing through the point and e is the elementary charge of an electron (1.602 x 10^-19 C). The charge passing through the wire is given by: Q = It
where I is the current in the wire and t is the time interval. Substituting the given values, we have:
[tex]n = Q/e = (It)/e = (5.63 x 10^20 electrons)/(1.602 x 10^-19 C/electron) ≈ 3.51 x 10^39 C[/tex]
Solving for the current, we get: [tex]I = Q/t = (3.51 x 10^39 C)/(2.59 s) ≈ 1.35 x 10^39 A[/tex]
However, this result is not physically meaningful, as the current density (which is the current per unit area) depends on the cross-sectional area of the wire. We can find the current density using the formula: J = I/A
where A is the cross-sectional area of the wire. Substituting the given values, we have: [tex]J = (1.35 x 10^39 A)/(1.71 x 10^-6 m^2) ≈ 7.89 x 10^44 A/m^2[/tex]
This value is also not physically meaningful, as it is much larger than any current density observed in practice. Therefore, there may be an error in the given values or in the calculation.
To learn more about electrons here:
https://brainly.com/question/1255220
#SPJ11
how do astronomers think jupiter generates its internal heat? how do astronomers think jupiter generates its internal heat? chemical processes radioactive decay internal friction due to its high rotation rate by contracting, changing gravitational potential energy into thermal energy nuclear fusion in the core
Astronomers think Jupiter generates its internal heat through a combination of chemical processes and by contracting, changing gravitational potential energy into thermal energy.
Jupiter's internal heat is thought to be generated by a combination of two main processes. The first process involves chemical reactions in the planet's interior, which release heat as a byproduct. The second process involves Jupiter's slow contraction over time, which changes gravitational potential energy into thermal energy.
This process is similar to the way a gas cools as it expands and heats up as it is compressed. While other processes, such as internal friction due to Jupiter's high rotation rate and radioactive decay, may also contribute to the planet's internal heat, they are thought to be relatively minor compared to these two main processes.
To know more about heat, here
https://brainly.com/question/16961806
#SPJ4
what is the clock cycle measured in nanoseconds for a 1.4ghz clock frequency?
The clock cycle for a 1.4GHz clock frequency is 0.714 nanoseconds. This is calculated by dividing the frequency (1.4GHz) by the number of cycles per second (1 billion cycles per second) which equals 0.714 nanoseconds.
The clock cycle for a 1.4 GHz clock frequency is measured in nanoseconds as follows: 1 GHz is equal to 1 billion cycles per second. Therefore, 1.4 GHz corresponds to 1.4 billion cycles per second. To convert this to nanoseconds, we can use the formula:
Clock cycle time (ns) = (1 / Clock frequency in GHz) x 1000
For a 1.4 GHz clock frequency:
Clock cycle time (ns) = (1 / 1.4) x 1000 ≈ 0.714 ns
So, the clock cycle for a 1.4 GHz clock frequency is approximately 0.714 nanoseconds.
Learn more about clock frequency here:
https://brainly.com/question/30695762
#SPJ11
An electric fan has a constant angular velocity of 2.10x10^3rpm. When the fan is turned off, it takes 6.2s for it to stop. What is its angular acceleration (assumed constant) during this time? (Indicate the direction with the sign of your answer.)
The angular acceleration of the electric fan is -53.55 rad/s^2 (opposite to its initial direction). This is calculated using the equation alpha = (omega_f - omega_i)/t, where omega_i = 2.10x10^3rpm converted to rad/s, omega_f = 0, and t = 6.2s.
To find the angular acceleration of the electric fan, we can use the equation:
ωf = ωi + αt
where ωi is the initial angular velocity (2.10x10^3rpm), ωf is the final angular velocity (0 rpm), α is the angular acceleration, and t is the time taken for the fan to stop (6.2 s).
Substituting the values given, we get:
0 = (2.10x10^3rpm) + α(6.2 s)
Solving for α, we get:
α = -3.39x10^2 rad/s^2
The negative sign indicates that the direction of the angular acceleration is opposite to the direction of the initial angular velocity.
learn more about angular acceleration here:
https://brainly.com/question/29428475
#SPJ11
A uniform disk has radius Ro and mass M₁. Its moment of inertia for an axis perpendicular to the plane of the disk at the disk's center isMo R². You have been asked to halve the disk's moment of inertia by cutting out a circular piece at the center of the disk. ▼ Part A In terms of Ro, what should be the radius of the circular piece that you remove? Express your answer in terms of Ro. NU ΑΣΦ VO 4 → ? R=
To halve the moment of inertia, remove half of the mass from the disk. The radius of the circular piece to be removed is √(M₁/Mo)Ro.
To halve the moment of inertia, we need to remove half of the mass from the disk. The moment of inertia of the removed circular piece can be calculated as (1/2)M₁(R/2)², where R/2 is the radius of the removed circular piece.
Equating the moment of inertia of the removed piece to (1/2)MoR², we get:
(1/2)M₁(R/2)² = (1/2)MoR²
Simplifying and solving for R, we get:
R = √(M₁/Mo)Ro
The radius of the circular piece that needs to be removed is √(M₁/Mo)Ro.
learn more about moment of inertia here:
https://brainly.com/question/15246709
#SPJ11
a playground merry-go-round has a mass of 140 kg and a radius of 1.70 m and it is rotating with an angular velocity of 0.450 rev/s. what is its angular velocity (in rad/s) after a 22.0-kg child gets onto it by grabbing its outer edge? the child is initially at rest.
The final angular velocity of the playground merry-go-round after the child gets onto it is 0.337 rad/s.
To find the final angular velocity of the playground merry-go-round after a child gets onto it, we need to use the principle of conservation of angular momentum.
The initial angular momentum of the system (merry-go-round and child) is the product of its moment of inertia and its initial angular velocity. When the child gets onto it, the moment of inertia of the system increases, but its angular momentum remains conserved.
We can calculate the final moment of inertia of the system and solve for its final angular velocity. After calculating, we get that the final angular velocity is approximately 0.337 rad/s. Therefore, the final angular velocity of the playground merry-go-round after the child gets onto it is 0.337 rad/s.
Learn more about angular velocity
https://brainly.com/question/29557272
#SPJ4
The total energy of the body executing S.H.M. is 10 J. Then the kinetic energy when the displacement is half of the amplitude is 5.73 7.5J 5J 2.5 J 12.5 J
The kinetic energy of the body executing S.H.M. is 7.5 J when the displacement is half of the amplitude.
The total energy of the body executing S.H.M. is 10 J, let's find the kinetic energy when the displacement is half of the amplitude.
In S.H.M., the total energy (E) is the sum of the kinetic energy (K) and potential energy (U). We are given that E = 10 J.
1. The potential energy (U) is given by: U = (1/2)kx², where k is the spring constant and x is the displacement
At maximum amplitude, all the energy will be potential energy.
Let maximum amplitude is A and spring constant be k.
[tex]10 = 1/2kA^2[/tex]
[tex]A = \sqrt{20/k}[/tex]
Now potential energy at half the displacement of the amplitude.
[tex]U = 1/2k(\sqrt{20/k}/2)^2[/tex]
U = 20/8
2. The kinetic energy (K) is given by: K = E - U, where E is the total energy and U is the potential energy.
K = 10 -20/8 = 7.5 J
Therefore the kinetic energy of the body at half of the amplitude is 7.5 J.
Learn more about kinetic energy:
https://brainly.com/question/25959744
#SPJ11
Suppose you have resistors 1.5 kΩ, 4.0 kΩ, and 5.0 kΩ and a 100 V power supply. What is the ratio of the total power delivered to the resistors if they are connected in parallel to the total power delivered if they are connected in series?
The ratio of the total power delivered when the resistors are connected in parallel to the total power delivered when they are connected in series is 11.75.
To calculate the ratio of the total power delivered to the resistors when connected in parallel to the total power delivered when connected in series, we need to use the following formulas:
Power (P) = V² / R, where V is the voltage and R is the resistance.
When resistors are connected in parallel, the total resistance (Rt) is given by 1/Rt = 1/R₁ + 1/R₂ + 1/R₃.
When resistors are connected in series, the total resistance (Rt) is given by Rt = R₁ + R₂ + R₃.
First, let's calculate the total resistance when the resistors are connected in parallel:
1/Rt = 1/1500 + 1/4000 + 1/5000
Rt = 895.52 Ω
Now, we can calculate the power delivered to each resistor when they are connected in parallel:
P₁ = 100² / 1500 = 6.67 W
P₂ = 100² / 4000 = 2.50 W
P₃ = 100² / 5000 = 2.00 W
The total power delivered to the resistors when they are connected in parallel is:
Pp = P₁ + P₂ + P₃ = 11.17 W
Next, let's calculate the total resistance when the resistors are connected in series:
Rt = 1500 + 4000 + 5000
Rt = 10500 Ω
The total power delivered to the resistors when they are connected in series is:
Ps = 100² / 10500 = 0.95 W
Therefore, the ratio of the total power delivered when the resistors are connected in parallel to the total power delivered when they are connected in series is:
Pp / Ps = 11.17 W / 0.95 W = 11.75
Learn more about voltage:
https://brainly.com/question/24858512
#SPJ11
The word astronomy contains the root astro. what does the root astro mean?
Astro is used in academic discourse and common speech indicates our enduring interest with the cosmos and our desire to investigate and comprehend the enormous, intricate, and enigmatic cosmos outside of our globe.
Greek-derived "astro" refers to stars or other heavenly bodies. It has been utilised to create a number of astronomy-related words, such as astronaut and astrophysics, which deal with the study of the physical characteristics of celestial objects.
Anything outside of the earth's atmosphere, including as planets, comets, galaxies, and other celestial objects, can also be referred to as "astro."
Its use in both academic discourse and common speech indicates our enduring interest with the cosmos and our desire to investigate and comprehend the enormous, intricate, and enigmatic cosmos that exists outside of our globe.
Learn more about Astro:
https://brainly.com/question/29612076
#SPJ4
A particular constant-pressure reaction is spontaneous at 395 K. The enthalpy change for the reaction is +25.7 kJ.
What can you conclude about the magnitude of ?S for the reaction?
?S is
The magnitude of the entropy change ΔS for the reaction should be greater than 0.065 kJ/K.
To determine the magnitude of the entropy change (ΔS) for this reaction, we'll use the Gibbs free energy equation, which is:
ΔG = ΔH - TΔS
Since the reaction is spontaneous at 395 K, ΔG must be negative. The enthalpy change (ΔH) is given as +25.7 kJ. Let's find the ΔS that would make ΔG negative:
ΔG < 0
ΔH - TΔS < 0
Now, we'll plug in the given values:
25.7 kJ - (395 K * ΔS) < 0
To solve for ΔS, we'll isolate it on one side of the inequality:
ΔS > (25.7 kJ) / (395 K)
ΔS > 0.065 kJ/K
We can conclude that the magnitude of the entropy change (ΔS) for this reaction is greater than 0.065 kJ/K to make the reaction spontaneous at 395 K.
Learn more about entropy change:
https://brainly.com/question/6364271
#SPJ11
which type of charge has the ability to move from one substance to another?
The type of charge that has the ability to move from one substance to another is an electric charge.
Electric charges can be either positive or negative and are carried by subatomic particles, such as electrons or protons. When charges are separated, such as by rubbing two objects together, an electric field is created, which can cause charges to flow from one substance to another.
The movement of electric charges is what allows for the transfer of electrical energy through wires and the functioning of electronic devices.
Learn more about Electric charges
https://brainly.com/question/9194793
#SPJ4
determine the amount of heat, in kilojoules, needed to evaporate 100.g of water. the heat of vaporization for h2o is 40.7
The amount of heat needed to evaporate 100 g of water is 4070 kJ.
The amount of heat (q) needed to evaporate a substance can be calculated using the formula:
q = m * ΔHvap
where m is the mass of the substance being evaporated and ΔHvap is the heat of vaporization.
For water, the heat of vaporization is 40.7 kJ/mol, which means that it takes 40.7 kJ of energy to evaporate one mole of water. To find out how much energy is needed to evaporate 100 g of water, we need to convert the mass to moles using the molar mass of water:
1 mol of water = 18.015 g/mol
Therefore, the number of moles of water in 100 g is:
n = 100 g / 18.015 g/mol = 5.548 mol
Now we can use the formula for q:
q = n * ΔHvap
q = 5.548 mol * 40.7 kJ/mol
q = 4070 kJ
Therefore, the amount of heat needed to evaporate 100 g of water is 4070 kJ.
To know more about evaporate, refer here:
https://brainly.com/question/320765#
#SPJ11
Question 5 5 pts A satellite is orbiting planet Earth with a linear speed of 5,721 m/s. The orbital radius of the satellite in km is: Question 6 6 pts Using planet Earth's mass of 5.972 x 1024 kg, the period (in minutes) of a satellite orbiting the planet with a radius of 10,422 km is: a
5)The orbital radius of the satellite in km is 6,689.256 km
6)The period (in minutes) of a satellite orbiting the planet with a radius of 10,422 km is 127 minutes
Question 5: To find the orbital radius of a satellite orbiting Earth with a linear speed of 5,721 m/s, we can use the following formula:
v = √(GM/R)
where v is the linear speed, G is the gravitational constant (6.674 x 10^-11 Nm²/kg²), M is Earth's mass (5.972 x 10^24 kg), and R is the orbital radius.
Rearranging the formula to solve for R:
R = GM/v²
Plugging in the values:
R = (6.674 x 10⁻¹¹ Nm²/kg²) x (5.972 x 10²⁴kg) / (5,721 m/s)²
R ≈ 6,689,256 meters
To convert the orbital radius to kilometers, divide by 1,000:
Orbital radius ≈ 6,689.256 km
Question 6: To find the period (in minutes) of a satellite orbiting Earth with a radius of 10,422 km, we can use Kepler's Third Law:
T² = 4π²R³/GM
where T is the period, R is the orbital radius in meters, G is the gravitational constant, and M is Earth's mass.
First, convert the orbital radius from kilometers to meters:
R = 10,422 km x 1,000 = 10,422,000 meters
Now, plug in the values and solve for T:
T² = (4π² x (10,422,000 m)³) / ((6.674 x 10⁻¹¹ Nm²/kg²) x (5.972 x 10²⁴kg))
T ≈ 7,618 seconds
To convert the period to minutes, divide by 60:
Period ≈ 127 minutes
To learn more about orbital radius https://brainly.com/question/9413007
#SPJ11
rank hydrogen, helium, chlorine, and argon based on the number of electrons each neutral atom has from smallest to largest.
The rank of the neutral atoms based on the number of electrons they have from smallest to largest is: Hydrogen (1 electron), Helium (2 electrons), Chlorine (17 electrons), Argon (18 electrons).
In a neutral atom, the number of electrons is equal to the number of protons, which is represented by the atomic number.
Determine the atomic numbers of the given elements:
- Hydrogen (H): Atomic number 1
- Helium (He): Atomic number 2
- Chlorine (Cl): Atomic number 17
- Argon (Ar): Atomic number 18
Arrange the elements based on their atomic numbers (which also represent the number of electrons in a neutral atom) from smallest to largest.
Therefore the answer is Hydrogen (1 electron), Helium (2 electrons), Chlorine (17 electrons), Argon (18 electrons).
More on atoms: https://brainly.com/question/29022522
#SPJ11
A net flux of 10x10^4N.m/C passes inward through the surface of a sphere of radius 5 cm. (a) How much charge is inside the sphere? (b) How precisely can we determine the location of the charge from this information?
There is 8.85 x 10⁻⁷ C of charge inside the sphere. We cannot determine the precise location of the charge inside the sphere from the given information.
We are given that a net flux of 10x10⁴ N.m/C passes inward through the surface of a sphere with a radius of 5 cm. We want to find (a) how much charge is inside the sphere, and (b) how precisely we can determine the location of the charge from this information.
(a) To find the charge inside the sphere, we can use Gauss's Law, which states that the electric flux through a closed surface is equal to the charge enclosed by the surface divided by the permittivity of free space (ε₀).
Mathematically, this is represented as:
[tex]\Phi=Q / \varepsilon_0[/tex]
where Φ is the electric flux, Q is the charge inside the sphere, and ε₀ is the permittivity of free space
(8.85 x 10⁻¹² C²/N.m²).
We are given that the electric flux, Φ, is 10x10⁴ N.m/C.
We can now solve for the charge, Q:
[tex]Q=\Phi \varepsilon_0[/tex]
= (10x10⁴ N.m/C) * (8.85 x 10⁻¹² C²/N.m²) = 8.85 x 10⁻⁷ C
So, there is 8.85 x 10⁻⁷ C of charge inside the sphere.
(b) Unfortunately, we cannot determine the precise location of the charge inside the sphere from the given information. Gauss's Law only gives us information about the net charge enclosed by the surface, not the distribution or location of the charge within the surface.
Learn more about charge:
https://brainly.com/question/14372859
#SPJ11
Recall that
speed = wavelength X frequency. Assuming that
the wavelength of a wave stays the same, would
the energy of the wave increase or decrease if
the speed of the wave increases? Why?
Frequency (f) is the number of full wavelengths in a specified amount of time. A wavelength's frequency and energy (E) drop as it becomes longer.
What occurs to wavelength while frequency remains constant?Except when the source changes, the frequency remains constant. The wavelength must grow because speed rises while frequency stays constant. (Increasing the number for wave speed in the equation λ=v/f λ = v / f without modifying the number for frequency would lead to a greater value for wavelength).
You may conclude from these equations that the wavelength grows shorter as the frequency rises. The wavelength lengthens as the frequency drops. The two main categories of waves are electromagnetic and mechanical.
learn more about Frequency
https://brainly.com/question/254161
#SPJ1
In this experiment, we could learn the difference between resistors in series and parallel. And we can see the relationship of the resistances, current and voltage in circuit which related to Ohm’s Law.
Introduction:
Ohm’s law is the most fundamental relationship between the quantities of electric potential (voltage), electric current, and resistance. It is valid for many circuits. When two or more devices are connected in a circuit with a variable power supply, they can be arranged in two different ways: a series connection or a parallel connection. In a series circuit, there is only one path for the current to flow therefore all parts of a series circuit have the same current. In a parallel circuit, each device has a connection to the power supply, independent of the other device. The current divides, with some passing through each parallel branch.
Equipments:
Ammeter, Resistors
Power supply, Ohmmeter
Voltmeter, Wires
Procedure:
Part I: Light Bulbs.
Series
Parallel
Connect 3 bulbs in series and set the power supply to 2.6 - 3.0V. We observed the brightness of the bulbs. Those light bulbs are very dim. Then we connect 3 bulbs in parallel and set the same voltage. Those light bulbs are very bright.
After this experiment, we can tell that 3 bulbs in series shared the voltage from the power supply therefore the brightness of 3 bulbs are dimmer than the brightness of 3 bulbs when we set in parallel connection. Voltage of 3 bulbs in parallel have the same voltage of each other and equal to the voltage from power supply.
Part II: Resistors in Series.
R1 R2 R3 Series
Set up the series circuit as shown. And then we set the power supply to ~ 15.0V so we can measure the current and the voltage of each resistor in the circuit.
Current
(A)
Voltage
(V)
Resistance
()
R1
0.032
3.50
109.4
R2
0.032
10.41
325.3
R3
0.032
1.06
33.1
Compare to the known resistances:
Experimental Result
Known Resistance
Percent Error
R1
109.4
100
9.4%
R2
325.3
330
1.4%
R3
33.1
33
0.3%
V = Vị + V + V3 = 3.50 + 10.41 + 1.06 = 14.97(V)
As we saw, the total voltage of 3 resistor equal to the voltage of the power supply (15V).
Resistors in Parallel.
R1 Parrallel
Set up the circuit in parallel as shown, set the power supply to ~5.0V
Current
(A)
Voltage
(V)
Resistance
()
R1
0.046
5.0
108.7
R2
0.015
5.0
333.3
R3
0.145
5.0
34.5
Compare to the known resistances:
Experimental Result
Known Resistance
Percent Error
R1
108.7
100
8.7%
R2
333.3
330
1.0%
R3
34.5
33
4.5%
I lit 12+ 13 = 0.046 + 0.015 + 0.145 = 0.206(A)
Is I =I1+I2+I3 ?
Yes, in a parallel circuit, the total current flowing through the circuit is equal to the sum of the current flowing through each individual resistor.
In this experiment, we learned the difference between resistors in series and parallel and their relationship to Ohm's Law. In a series connection, all components share the same current, while in a parallel connection, the current divides between components. We observed that light bulbs connected in series were dimmer compared to those in parallel due to voltage sharing.
By measuring current and voltage across resistors in series and parallel circuits, we compared experimental results to known resistance value and observed that total voltage in series equals the power supply voltage, and the sum of the currents in parallel equals the total current. This confirms the relationship of resistances, current, and voltage according to Ohm's Law.
Learn more about parallel here:
https://brainly.com/question/22746827
#SPJ11
The Hale telescope on Mount Palomar has a diameter of 5.08 m (200 in.). Hint (a) If the smallest crater diameter the telescope can resolve on the Moon is 54.2 m, what wavelength light is being used? (Give your answer in nm. Assume the crater is 3.76 x 108 m from the telescope.) nm (b) What diameter crater (in m) could the Hubble telescope resolve using this wavelength, assuming the same distance as the Mount Palomar telescope. (The Hubble telescope's aperture diameter is 2.40 m.)
The wavelength is 568 nm. The Hubble telescope could resolve a crater with a diameter of approximately 108.6 m using this wavelength and assuming the same distance as the Mount Palomar telescope.
(a) To find the wavelength of light being used, we can use the angular resolution formula for a telescope:
θ = 1.22 * (λ/D)
where θ is the angular resolution, λ is the wavelength, and D is the diameter of the telescope. We know the diameter (D) of the Hale telescope is 5.08 m, and the smallest crater diameter it can resolve on the Moon is 54.2 m. We can use the small-angle approximation:
θ = crater diameter/distance to the Moon
θ = 54.2 m / 3.76 x 10^8 m ≈ 1.44 x 10^-7 rad
Now, we can solve for the wavelength (λ):
1.44 x 10^-7 rad = 1.22 * (λ / 5.08 m)
λ ≈ 5.68 x 10^-7 m
Converting to nanometers (1 m = 10^9 nm):
λ ≈ 568 nm
(b) To find the diameter of the crater that the Hubble telescope can resolve using the same wavelength, we use the same formula and the Hubble telescope's aperture diameter (D) of 2.40 m:
θ_Hubble = 1.22 * (568 nm / 2.40 m)
θ_Hubble ≈ 2.89 x 10^-7 rad
Now, we can use the small-angle approximation to find the diameter of the crater:
crater diameter = θ_Hubble * distance to the Moon
crater diameter ≈ 2.89 x 10^-7 rad * 3.76 x 10^8 m ≈ 108.6 m
So, the Hubble telescope could resolve a crater with a diameter of approximately 108.6 m using this wavelength and assuming the same distance as the Mount Palomar telescope.
Learn more about wavelength here:-
https://brainly.com/question/31143857
#SPJ11
The two conductors are now connected by a wire. How do the potentials at the conductor surfaces compare now? A. VA greater than VB B. VA less than VB C. VA equal to VB
When two conductors are connected by a wire, the potentials at the conductor surfaces compare as follows: VA equal to VB (Option C).
This is because when connected by a wire, the conductors will reach an equilibrium state where they share the same electric potential, allowing charge to flow between them until their potentials become equal.
Since they are connected by a wire that causes them to function like a single conductor, both spheres' potential must be equal when they come into contact, regardless of the original conditions.
The conductors become one conductor when they are linked together by a string.
The electric potentials at the conductor surfaces are the same because conductors have equipotentials.
Learn more about "potential": https://brainly.com/question/26978411
#SPJ11
Assume you have an RC circuit with a 50.0 V DC supply, a 125 kΩ resistor, and a 550 µF capacitor. If the capacitor is initially uncharged, what will be the current in the circuit 64.0 s after connecting the circuit to the DC supply?
After connecting the circuit to the DC supply, the capacitor will begin to charge. The current in the circuit will initially be high as the capacitor charges, but it will gradually decrease as the capacitor reaches its maximum charge.
After 64.0 seconds, the current in the circuit will have decreased to a steady-state value determined by the resistance and capacitance values.
To calculate the current in the circuit after 64.0 seconds, we can use the formula:
I = V/R * e^(-t/RC)
Where I is the current in the circuit, V is the voltage of the DC supply (50.0 V), R is the resistance of the circuit (125 kΩ), C is the capacitance of the capacitor (550 µF), and t is the time since the circuit was connected to the DC supply (64.0 s).
Plugging in these values, we get:
I = 50.0 V / 125 kΩ * e^(-64.0 s / (125 kΩ * 550 µF))
Simplifying this expression, we get:
I = 0.4 mA
Therefore, the current in the circuit 64.0 seconds after connecting it to the DC supply is 0.4 mA.
Learn more about DC supply here:
https://brainly.com/question/14506323?
#SPJ11
What color would a red apple appear to be if you shine a blue light on it?
If you shine a blue light on a red apple, the apple would appear to be black or very dark. This is because the color of an object is determined by the wavelengths of light that it reflects.
. A red apple appears red because it reflects wavelengths of light that correspond to the color red, while absorbing other wavelengths. When a blue light is shone on the apple, the wavelengths of light that the apple would normally reflect are being absorbed by the blue light, making the apple appear to be a darker color.
This phenomenon is called subtractive color mixing, where the colors of objects are determined by the colors of the light that are absorbed, or subtracted, by the object.
In this case, the blue light is subtracting the colors that the apple would normally reflect, resulting in a darker appearance. It is important to note that the apple is still red, but the blue light is altering our perception of its color due to subtractive color mixing.
To learn more about, Determined
https://brainly.com/question/16234377
#SPJ11
The rms speed of the atoms in a 2.10g sample of helium gas is 760m/s . What is the thermal energy of the gas?I figured I should solve for Temperature first, so I used the following formulas:Vrms = sqrt(3*KB*T/m) => Vrms2*m/3*KB=TPlugging in, I got (760 m/s)2*(0.0021 kg)/(1.38*10-23 J/K * 3) = 2.93*1025 K.I thought that looked quite large to say the least, but it's the number the equation from the book gave me so I chugged along.Eth = 1.5*nRT2.1g He * 1mol He/4g He = 0.525 mol He = n=> E th = 1.5*(0.525mol)(8.31 J/mol K)(2.93*105 K) = 1.92*1026 JHowever, the online homework told me that answer is wrong.What am I doing wrong? It seems like it should be a straightforward problem but I'm just not getting it.Thanks in advance
The thermal energy of a 2.10g sample of helium gas with a root mean square speed of 760m/s is calculated to be 1.92 x 10²⁶ J.
To calculate the temperature of the gas, we use the formula Vrms = √(3KBT/m), where KB is the Boltzmann constant, T is the temperature in Kelvin, m is the molar mass of helium, and Vrms is the root mean square speed. Plugging in the given values, we get:
(760 m/s)² x (0.0021 kg) / (1.38 x 10⁻²³ J/K x 3) = 2.93 x 10⁵ K
Next, we use the ideal gas law to calculate the number of moles of helium:
n = (2.10 g He) / (4 g/mol He) = 0.525 mol He
Finally, we use the formula Eth = 1.5 x nRT to calculate the thermal energy of the gas, where R is the gas constant. Plugging in the values we have calculated, we get:
Eth = 1.5 x (0.525 mol) x (8.31 J/mol K) x (2.93 x 10⁵ K) = 1.92 x 10²⁶ J
Learn more about thermal energy :
https://brainly.com/question/30819997
#SPJ4
The complete question is :
What is the thermal energy of a 2.10g sample of helium gas with a root mean square speed of 760m/s? The molar mass of helium is 4g/mol and assuming ideal gas behavior, calculate the temperature of the gas using the formula Vrms = √(3KBT/m), where KB is the Boltzmann constant. Finally, calculate the thermal energy of the gas using the formula Eth = 1.5 x nRT, where n is the number of moles of helium, R is the gas constant, and T is the temperature in Kelvin.
find the speed of propagation vp of this wave. express the velocity of propagation in terms of some or all of the variables a , k , and ω .
The speed of propagation [tex]v_p[/tex] of a wave is [tex]v_p = \omega/k[/tex]. An expression for [tex]v_p[/tex] in terms of a, k, and ω is [tex]v_p = \frac{\omega}{a} \times \frac{a}{k}[/tex].
To find the speed of propagation [tex]v_p[/tex] of a wave, we can use the formula [tex]v_p = \omega/k[/tex], where ω is the angular frequency and k is the wave number.
If we have additional information about the wave, such as its wavelength λ or its period T, we can also use the formulas λ = 2π/k and ω = 2π/T to derive the expression for [tex]v_p[/tex].
Assuming that we know the wave number k and the angular frequency ω, we can express the velocity of propagation [tex]v_p[/tex] in terms of these variables as:
[tex]v_p = \omega/k[/tex]
This formula tells us that the speed of propagation is directly proportional to the angular frequency and inversely proportional to the wave number. In other words, waves with higher frequencies and shorter wavelengths will propagate faster than waves with lower frequencies and longer wavelengths.
If we also know the amplitude a of the wave, we can use the formula:
[tex]\omega = 2\pi/T = ck/a[/tex], where c is the wave speed,
to derive an expression for [tex]v_p[/tex] in terms of a, k, and ω:
[tex]v_p = c/a = \frac{\omega}{a} \times \frac{a}{k}[/tex]
This formula tells us that the speed of propagation depends on the amplitude of the wave as well as the wave number and angular frequency.
The larger the amplitude, the slower the wave will propagate, while the smaller the amplitude, the faster the wave will propagate.
Learn more about wave:
https://brainly.com/question/19036728
#SPJ11
A 36.40 g sample of solid lead is initially at 304.00 oC. If the sample is heated at constant pressure ( = 1 atm), _____ kJ of heat are needed to raise the temperature of the sample to 482.00 o
C. The following information is given for lead at 1 atm:
Tb = 1740.00 o
C
Tm = 328 o
C
Hvap(1740.00 o
C) = 858.2 j/g
Hfus( 328.00 o
C = 23,00J/g
Specific heat solid = 0.1300 J/g o
C
Specific heat liquid = 0.1380 J/g o
C
To calculate the amount of heat needed to raise the temperature of the lead sample from 304.00 C to 482.00 C, we need to consider the following steps:
1. First, we need to determine the heat required to raise the temperature of the solid lead from 304.00 C to its melting point at 328 oC:
Q1 = m × Cs × ΔT
Q1 = 36.40 g × 0.1300 J/g oC × (328.00 oC - 304.00 oC)
Q1 = 94.48 J
2. Next, we need to determine the heat required to melt the solid lead at its melting point:
Q2 = m × Hfus
Q2 = 36.40 g × 2300 J/g
Q2 = 83,720 J
3. Then, we need to determine the heat required to raise the temperature of the liquid lead from its melting point to its boiling point at 1740.00 oC:
Q3 = m × Cl × ΔT
Q3 = 36.40 g × 0.1380 J/g oC × (1740.00 oC - 328.00 oC)
Q3 = 87,894.88 J
4. Next, we need to determine the heat required to vaporize the liquid lead at its boiling point:
Q4 = m × Hvap
Q4 = 36.40 g × 858.2 J/g
Q4 = 31,247.28 J
5. Finally, we need to determine the heat required to raise the temperature of the lead vapor from its boiling point to the final temperature of 482.00 oC:
Q5 = m × Cv × ΔT
Q5 = 36.40 g × 0.1380 J/g oC × (482.00 oC - 1740.00 oC)
Q5 = -204,634.4 J
Note that the temperature change is negative in this step, since we are cooling the lead vapor down from its boiling point.
6. To find the total heat required, we simply add up all the heat values from the previous steps:
Qtotal = Q1 + Q2 + Q3 + Q4 + Q5
Qtotal = 94.48 J + 83,720 J + 87,894.88 J + 31,247.28 J - 204,634.4 J
Qtotal = -1,110.96 J
The total heat required to raise the temperature of the lead sample from 304.00 oC to 482.00 oC is -1,110.96 J. Note that the negative sign indicates that the process is exothermic, i.e., heat is released rather than absorbed.
Learn more about temperature here:
https://brainly.com/question/11464844
#SPJ11
Work input is equal to the effort force times the distance through which the force is applied.
True
False
Work input is the amount of work performed on a machine that is equal to the effort force times the distance travelled by the force.
What does it mean to apply force over a distance?When a force is exerted across a distance to an item, work is accomplished. This implies that the total energy of an object will be impacted when a force is applied to it over a distance.
What does distance force or force mean?Every influence that prompts an object to change is referred to as a force. Distance is the amount of distance that an object moves over time. A force is applied to an item, and the more force is applied, the farther the thing will move.
To know more about distance visit:-
brainly.com/question/29792091
#SPJ1
True. Work input is equal to the effort force times the distance through which the force is applied.
Give a definition of work.
The amount of energy given to the machine is its work input. The product of the effort force applied to a machine and the distance the force is applied can be used to determine work input.
Work input is the work that you perform on a machine. The product of the effort force applied to a machine and the distance the force is applied can be used to determine work input. To get the desired job, the machine receives work input. Work output refers to the work performed on an object by a machine. Work = Force * Distance is the formula for calculating work.
To learn more about work use:
https://brainly.com/question/28356414
#SPJ1
Select the statements that correctly recall the meaning of the Schrodinger equation.a. The electron has both particle and wave behavior, represented by wave functions, ψ.b. The location of an electron must be described statistically instead of absolutely.
The Schrödinger equation plays a crucial role in understanding the dual nature of electrons and the probabilistic description of their locations.
The Schrödinger equation is a fundamental equation in quantum mechanics that describes the behavior of particles, like electrons, at the quantum level. It is essential in understanding two key concepts:
The electron has both particle and wave behavior, represented by wave functions, ψ: This statement is correct. The Schrödinger equation incorporates the dual nature of electrons, treating them as both particles and waves. The wave function (ψ) is a mathematical representation of the electron's wave-like behavior, which contains information about the electron's position and momentum.
The location of an electron must be described statistically instead of absolutely: This statement is also correct. The Schrödinger equation implies that we cannot know the exact position of an electron; instead, we can only describe its probable location using a statistical approach. The square of the wave function (|ψ|^2) gives the probability density of finding an electron in a particular region of space.
For more such answers on Schrödinger equation
https://brainly.com/question/17750570
#SPJ11
Verify the units obtained for magnetic field strength B in Example 24.1
are in fact teslas (T).
Example 24.1: Calculating B-Field Strength in an Electromagnetic Wave
What is the maximum strength of the B -field in an electromagnetic wave that has a maximum E -field strength of 1000 V/m ?
To verify the units for magnetic field strength B in Example 24.1, we need to calculate B using the given maximum E-field strength of 1000 V/m. The relationship between the E-field and B-field in an Electromagnetic Wave can be expressed as:
B = E / c
where B is the magnetic field strength in teslas (T), E is the electric field strength in volts per meter (V/m), and c is the speed of light in a vacuum, approximately 3.0 x 10^8 meters per second (m/s).
Given the maximum E-field strength of 1000 V/m, we can calculate the maximum B-field strength:
B = (1000 V/m) / (3.0 x 10^8 m/s)
B ≈ 3.33 x 10^-6 T
The calculated magnetic field strength B is approximately 3.33 x 10^-6 teslas (T), confirming that the units are indeed teslas.
Learn more about Electromagnetic Wave here:
https://brainly.com/question/3101711
#SPJ4
What action did jack swigert take that led to the explosion on apollo 13?
It is important to note that Jack Swigert did not take any action that directly led to the explosion on Apollo 13.
The explosion was caused by a malfunction in one of the oxygen tanks in the service module, which occurred while Swigert was in the process of stirring the tanks at the request of the ground crew. This was a routine procedure, and Swigert followed the proper protocols in carrying it out.
The malfunction was ultimately traced to a faulty thermostat that had been damaged during a test on the ground.
Learn more about Jack Swigert
https://brainly.com/question/860682
#SPJ4
a state patrol officer saw a car start from rest at a highway​ on-ramp. she radioed ahead to another officer mi along the highway. when the car reached the location of the second officer min​ later, it was clocked going 60​ mi/hr. the driver of the car was given a ticket for exceeding the 60​ mi/hr speed limit. why can the officer conclude that the driver exceeded the speed​ limit?
The car started from rest at the on-ramp and was clocked going 60 mph when it passed the second officer on the highway, indicating that it was traveling at a higher speed than the speed limit for at least some part of that distance.
The state patrol officer can conclude that the driver exceeded the 60 mph speed limit because the car was observed starting from rest at the on-ramp and reaching 60 mph when it passed the second officer on the highway.
Based on this information, the officer can infer that the car was accelerating at a rate greater than the acceleration due to gravity (which is 9.81 m/s^2 or 32.2 ft/s^2). If the car had been traveling at a constant speed of 60 mph, it would have taken the same amount of time to travel the distance between the two officers, regardless of whether it had started from rest or not.
Therefore, the fact that the car was able to reach 60 mph in the distance between the two officers indicates that it was traveling at a higher speed than 60 mph for at least some part of that distance.
Additionally, the officer may have used a speed detection device, such as a radar gun or a laser speed gun, to confirm that the car was traveling at a speed greater than the speed limit. Based on these observations, the officer was justified in giving the driver a ticket for exceeding the speed limit.
To learn more about speed limit
https://brainly.com/question/30578582
#SPJ4
The force gravity on the elevator is 2,685N. The force of tension is 8,656N. What is the net force?
The net force on the elevator is 5971 N.
What is netforce?The net force is the sum of all the forces acting in an object.
To calculate the net force on the elevator, we use the formula below.
Formula:
F' = F-f............................... Equation 1Where:
F' = Net forceF = Force of tension of the elevatorf = Force of gravityFrom the question,
Given:
F = 8656 Nf = 2685 NSubstitute these values into equation 1
F' = 8656-2685F' = 5971 NHence, the net force is 5971 N.
Learn more about about net force here: https://brainly.com/question/11556949
#SPJ1
