The magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.
To find the answer, we have to know more about the electric field.
How to find the magnitude of uniform electric field?a space where other charged particles or things would be forced to move away from a charged particle or item is called the electric field.The expression for electric field in terms of potential V and the distance x can be written as,[tex]E=\frac{dV}{dx}[/tex]
where, dV is the potential difference at two different points of the conductor and dx is the difference of the points.
Thus, the magnitude of electric field can be written as,[tex]|E|=|-(\frac{dV}{dx} )|=|-(\frac{-2000-400}{8-2} )|\\\\|E|=400V/m[/tex]
Thus, we can conclude that, the magnitude of the uniform electric field, if the electric potential is -2000 v at x = 8m and is 400 v at x = 2 m in x direction will be, 400V/m.
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I have provided a picture of the question
Answer:
7.8 x 10^18 electrons
Explanation:
1 Coulomb is 6.24 x10^18 charges multiply this by 1.25 to get the answer above
The strip of the sky through which the sun, the moon, and the bright planets appear to move in the course of a year is called:_______.
Answer:
Milky way galaxy
Explanation:
This is where the sun is the main star whereby the other planets and stars revolve around it in a cycle
write the factors of which affect pressure
Answer:
They are:
1. Height of liquid
2. Density of liquid
3. Acceleration due to gravity
A rubber ball is dropped on the floor. The rebound speed is one-half the speed it had just before hitting the floor. It will rise to ________ of the original height from which it was dropped. Group of answer choices 1/3 1/8 1/6 1/4 1/5
Since the rebound speed is one-half the speed it had just before hitting the floor, it will rise to 1/4 of the original height from which it was dropped; option C.
What is rebound speed?Rebound speed refers to the speed at which a body when it hits a surface is returned or rebounded to the original direction in which it comes from.
When objects are released from a height and allowed to hit the floor, some of the original energy of the object is converted to heat and sound, thus the object will rebound with a lesser speed and to a smaller height than from which it is released.
In the case of a rubber ball which is dropped on the floor. The rebound speed is one-half the speed it had just before hitting the floor.
Therefore, the height will be one-quarter the original height.
In conclusion, the rebounding of a ball is to a lesser height than the original height.
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A charge q = -10 µc experiences an electrostatic force of 35 mn to the left. What is the magnitude and direction of the electric field?
A charge q = -10 µc experiences an electrostatic force of 35 mn to the left.
The magnitude of electric field will be = 35 * [tex]10^{2}[/tex] N/C
Direction of the electric field will be from left to right
The force exerted by a charged body on another charged or uncharged body is called electrostatic force. This force is known as non-contact force because these forces comes into play even when the bodies are not in contact with each other.
Electric field, an electric property associated with each point in space when charge is present in any form. The magnitude and direction of the electric field are expressed by the value of E, called electric field strength or electric field intensity or simply the electric field.
given
q ( charge ) = -10 µc
Electrostatic force = 35 mN
Electric field = Force on charge / charge
= 35 * [tex]10^{-3}[/tex] / (-10 * [tex]10^{-6}[/tex])
= - 35 * [tex]10^{2}[/tex] N/C
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The astronomy club placed the telescope on the tripod and that was their choice. according to the elements of style, which sentence is the best revision?
According to the Elements of Style, the telescope was set up on the tripod by the astronomy club.
To find the answer, we need to know about the revision.
How do revisions work?Simply put, a revision is a succinct summary of a situation or narrative.The astronomy club's decision to mount the telescope on the tripod qualifies as the best revision in this instance as defined by the Elements of Style. It effectively conveys the core concept.Thus, we can conclude that, according to the Elements of Style, the telescope was set up on the tripod by the astronomy club.
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Fuel crises will occur in future because of a. over use of petroleum
b. use of solar energy
c. over use of bio-gas
d. use of hydro-energy
According to current scientific understanding, the idea that the milky way galaxy might be home to a civilization millions of years more advanced than ours is.
According to contemporary scientific understanding, the thought that the Milky Way Galaxy energy is home to a civilization millions of years more developed than ours is. one reasonable solution to Fermi's paradox.
What is the milky way galaxy?Our Milky Way galaxy is simply one of the billions of galaxies in the universe. Within it, there are at smallest 100 billion stars, and on moderate, each star contains at least one planet circling it. This means there are potentially thousands of planetary procedures like our solar system within the galaxy!The Milky Way gets its name from a Greek myth about the goddess Hera who sprayed milk across the sky. In other parts of the world, our galaxy goes by different names.The Milky Way is about we look. Up, down, left, right, that is the Milky Way. From Earth, it can be noticed as a hazy form of stars in the evening sky that the stripped eye can barely notice. You can visit the Milky Way all year, no matter where you are on the earth.To learn more about Milky Way galaxy, refer to:
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When a metal is illuminated by light, photoelectrons are observed provided the light's wavelength is less than 669 nm. What is the metal's work function (also called the binding energy)?
When a metal is illuminated by light, photoelectrons are observed provided the light's wavelength is less than 669 nm. The work function will be 0.030 * [tex]10^{-17}[/tex] J
The work function (or work function) is defined as the minimum amount of thermodynamic work (i.e. energy) required to remove an electron from a solid to a point in the vacuum immediately outside the solid surface.
When light of suitable frequency falls on a metal surface, electrons are emitted. These photo (light) generated electrons are called photoelectrons
h = 6.62 x [tex]10^{-34}[/tex] J/Hz
c = 3 * [tex]10^{8}[/tex] m/s
lambda = 669 * [tex]10^{-9}[/tex] m
work function = h*c/lambda
= 6.62 x [tex]10^{-34}[/tex] * 3 * [tex]10^{8}[/tex] / 669 * [tex]10^{-9}[/tex]
= 0.030 * [tex]10^{-17}[/tex] J
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What total energy (in kj) is contained in 1. 0 mol of photons, all with a frequency of 2. 75 × 10^14 hz?
The total energy contained in 1 mol of photons is 109.75 KJ / mol
Given,
Frequency = 2.75 × 10 ^ 14 hz
We know that, Energy = Number of photons × Energy in one photon
= n h v
= (6.023 × 10^23) × ( 6.626 × 10^-34) ×( 2.75×10^14)
=109.75 KJ/mol
Concepts
The total energy of a system is the sum of its gravitational potential and kinetic energy, and this total energy is preserved in orbital motion. To depart a planet and not return, objects should have a minimum velocity, known as the Escape Velocity
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Newton's reformulation of kepler's third law allows us to measure the masses of bodies in orbit around each other, if we can measure?
Newton's reformulation of kepler's third law allows us to measure the masses of bodies in orbit around each other, if we can measure the distances and periods of revolution
Isaac Newton made a reformulation of the 3rd law of Kepler with regards to the orbital periods of a planet and this helped to measure the masses of bodies in orbit around each other, if we can measure the distances and periods of revolution
What is kepler's third law?This refers to the law of physics that states that the square of the orbital periods of a planet is directly proportional to the cube of the semi-major axis of its orbit
Hence, there was a reformulation of the 3rd law of Kepler by Isaac Newton with regards to the orbital periods of a planet and this helped to measure the masses of bodies in orbit around each other, if we can measure the distances and periods of revolution
This shows that the distances and periods of revolution are key aspects to neasyre the masses of bodies in orbit around each other,
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Two vectors have magnitudes of 10 and 15. The angle between them when they are drawn with their tails at the same point is 65. The component of the longer vector along the line of the shorter is?
Two vectors have magnitudes of 10 and 15. The angle between them when they are drawn with their tails at the same point is 65. The component of the longer vector along the line of the shorter is 6.33 .
A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.
The taller component will be 15 . There will be two components taller component , one in the direction of shorter component and other perpendicular to the shorter wavelength .
The component of longer wavelength in the direction of shorter will be
= 15 cos (theta ) = 15 cos (65) = 6.33
where theta is the angle between both the vectors
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The two articles you just read contain conflicting conclusions. What questions do you have about the information
presented in the articles? Maybe there's something you would like to know more about before making your own
conclusion. Or perhaps there's an item that was presented as a fact that you would like to investigate. Before you
make your conclusion about human involvement in climate change, list four to five questions that you would like
answered.
The five questions that I would like to be answered concerning human involvement in climate change would be disclosed below.
What is climate change?Climate change is defined as the change that affects the normal atmospheric patterns which is often related to the activities of the human and their environment.
The five questions that I would like to be answered concerning human involvement in climate change include the following:
Is climate change caused by humans? What are the main threats of climate change? How is climate change affecting animals? How is climate change affecting people? How is climate change affecting the ocean?From the definition, climate changes with respect to the activities of human beings. Such activities include the following:
Burning fossil fuels, cutting down forests,Fertilisers containing nitrogen,Fluorinated gases, andIncreased farming of livestock.Learn more about climate change here:
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A positive charge of 94. 0 nc is 22. 0 cm from a negative charge of 53. 0 nc. the force on one of the charges due to the other is approximately________.
A positive charge of 94. 0 NC is 22. 0 cm from a negative charge of 53. 0 NC. The force on one of the charges due to the other is approximately 92.6× 10⁹ N
Force between the two charges depends upon the charges, distance between the charges and the medium between the two charges. It is given by:
F = kq₁q₂ / r²
where q₁ is the charge of the first charge
q₂ is the charge of the second charge
r is the distance between the charges
k is the permitivitty of medium
F is the force between the two charges
Given , q₁ = 94NC
q₂ = 53NC
r = 22cm = 0.22m
On subsituting,
F = 9 × 10⁹ × 94 × 53 / (0.22)²
⇒ F = 92.6 × 10⁹ N
Since, the force between the two charges is equal on both the charges hence, force on one of the charges due to the other is approximately 92.6× 10⁹ N.
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A particle moving at speed 0. 32 c has momentum p0. the speed of the particle is increased to 0. 72 c. what is its momentum now?
A particle moving at speed 0.32 c has momentum P₀. the speed of the particle is increased to 0.72 c then its momentum would be 2.25P₀.
What is momentum?It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
Mathematically the formula of the momentum is
P = mv
where P is the momentum of the particle
m is the mass of the particle
v is the velocity by which the particle is moving
As given in the question a particle moving at speed 0.32 c has momentum P₀. the speed of the particle is increased to 0.72 c
by using the formula of the momentum and substituting the values of the velocity
P =mv
As mentioned in the question when the particle is moving with 0.32c velocity it has a momentum of P₀
P₀ = m*(0.32c)
If the speed of the particle is increased to 0.72 c the momentum would be
P=m*(0.72c)
by dividing the second equation from the first one
P₀/P = 0.32c/0.72c
P₀/P = 0.44
P =2.25P₀
Thus, the increased momentum of the particle would be 2.25P₀
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What is the molar concentration of a 300.0 ml solution containing 5.00 g of nh3?
The molar concentration of a 300.0 ml solution containing 5.00 g of NH3 will be 0.98 mol/L
Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution.
A mole is defined as the amount of a substance that contains exactly 6.02214076 X1023 elementary entities of the given substance. Thus, a mole of a substance is referred to as the mass of a substance containing the same number of fundamental units as atoms in exactly 12.000 g of 12C.
1 mol of NH3 has a mass of 17 g
Moles of NH3 = 5 g of NH3 * (1 mol of NH3 / 17 g of NH3)
= 0.294 mol of NH3
Litres of solution = 300 mL solution ×( 1 L solution/1000mL sol)
= 0.300 L of solution
Molarity = moles of solute / litres of solution
= 0.294 / 0.300 = 0.98 mol/L
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A current of 0.4 A flows through a wire. How many electrons flow through a cross section of
the wire in one hour?
(Ans. e = 1.6 x 10-¹9 C
diameter? mm carries a steady current of 0.3142 A. Find the magnitude of
9 × 10²¹ electrons flow through a cross section of the wire in one hour.
What is the relation between current and charge?Mathematically, current = charge / timeIn S.I. unit, Charge is written in Coulomb and time in second. What is the amount of charge flown through a wire for one hour if it carries 0.4 A current?Charge= current × timeCurrent= 0.4 A, time = 1 hour= 3600 sCharge= 0.4× 3600= 1440 C
How many numbers of electrons present in 1440C of charge?One electron= 1.6 × 10^(-19) CSo, 1440 C = 1440/1.6 × 10^(-19)= 9 × 10²¹ electrons
Thus, we can conclude that the 9 × 10²¹ electrons flow through a cross section of the wire in one hour.
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Physics question, please answer this ASAP, thanks!
(a) The gravitational force received by each 1 kg mass is 8.66 N.
(b) The magnitude of gravitational acceleration is 8.66 m/s².
(c) The orbital speed of the ISS is 7,663.6 m/s.
(d) The time take for the ISS to orbit round the Earth is 5,558.75 s = 1.54 hours.
Gravitational force received by each 1 kg mass
The gravitational force received by each 1 kg mass is calculated as follows;
F = Gm₁m₂/r²
where;
m₁ is mass of Earthm₂ is mass of ISSr is the distance between the ISS and center of EarthF = (6.67 x 10⁻¹¹ x 5.97 x 10²⁴ x 1) / (6780,000)²
F = 8.66 N
Magnitude of gravitational accelerationmg = GMm/r²
g = GM/r²
where;
M is mass of Earthg = (6.67 x 10⁻¹¹ x 5.97 x 10²⁴ ) / (6780,000)²
g = 8.66 m/s²
Orbital Speed of the ISSv = √GM/r
v = √(6.67 x 10⁻¹¹ x 5.97 x 10²⁴ / 6780,000)
v = 7,663.6 m/s
Time of motion of the ISS round the EarthT = 2πr/v
T = (2π x 6780,000) / (7663.6)
T = 5,558.75 seconds
1 hour = 3600 seconds
= 5,558.75/3600
= 1.54 hours
Thus, the gravitational force received by each 1 kg mass is 8.66 N.
The magnitude of gravitational acceleration is 8.66 m/s².
The orbital speed of the ISS is 7,663.6 m/s.
The time take for the ISS to orbit round the Earth is 5,558.75 s = 1.54 hours.
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→e pointing up and the magnetic field →b pointing west. what is the direction of wave propagation?
When the magnetic field is heading west and the electric field is pointing up, the wave propagation will be in the north.
How do we find out the direction of wave propagation?
Electromagnetic waves (EM-waves), as we are aware, are transverse. Electric and magnetic fields are both perpendicular to one another in EM waves (E⊥B).
Transverse waves are waves in which the propagation direction is opposite the direction of amplitude. for instance, gravitational waves, light waves, and water waves.
In this instance, the magnetic field is heading west while the electric current is pointing up towards the screen's layout.
∴ E x B = κ
where E= the direction of the electric field,
B = the direction of the magnetic field,
κ = at a particular point, the direction of propagation
The aforementioned equation is right-handed. When we put our finger towards ourselves (away from the screen) and curl it to the west, and the thumb will indicate the wave propagation direction ( north side ).
The propagation of waves in our instance is in the north direction.
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The resistivity of the material of a wire is 1. 76 × 10-8 ωm. if the diameter of the wire is 2 × 10-3 m and its length is 2 m, what is its resistance?
The resistivity of the material of a wire is 1. 76 × 10-8 ωm. if the diameter of the wire is 2 × 10-3 m and its length is 2 m, then its resistance is 0.0112Ω
The resistance of a wire is solely determined by its length, cross-section area, and resistivity. So we calculate the resistance of a wire by knowing its diameter, length, and resistivity (which varies depending on the material). The resistance provided by a unit length of conductor with a unit area of cross-section is defined as resistivity. Its SI unit is the ohm-meter.
It does not alter as the wire length increases, but resistance increases fourfold when the wire is stretched to double its original length. Resistivity is defined as the electrical resistance per unit length and cross-sectional area of a conductor.
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If the current coming out a battery in a series circuit is 2 A, the current going into
the battery on the other side must be
Answer:
2 A
Explanation:
Kirchhoff Laws to the circuit consisting more than two batteries, the current leaving the battery is as same as entering the battery
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The distance covered by a car moving with a speed of 36 km/h in 15m is (a) 0.9 km (b) 9.0 km (C) 90 km (d) 900 km
Speed of a car = 36 km/h
Time taken = 15 minutes
Converting the time into hour:-
= 15/60 hours
= 1/4 hours
As we know that,
Distance = Speed × Time= (36 × 1/4) kilometres
= 9 kilometres
Hence the distance covered is 9 kilometres.
Option b) 9.0 kmThis is a uniform rectilinear motion exercise.
To start solving this exercise, we obtain the following data:
Data:v = 36 km/hd = ¿?t = 15 min = 0.25 hrMinutes to hour converter
60 min = 1 hour
[tex]\boldsymbol{\sf15\not{min}*\dfrac{1 \ hr}{60 \not{min}}=0.25 \ hr }}[/tex]
To calculate distance, speed is multiplied by time.
We apply the following formula: d = v * t
We substitute our data into the formula:
[tex]\boldsymbol{\sf{d=v*t}}[/tex]
[tex]\boldsymbol{\sf{d=36 \dfrac{km}{\not{h}}*0.25 \not{h} }}[/tex]
[tex]\boldsymbol{\sf{d=9 \ km}}[/tex]
The distance traveled by a car moving with a speed of 36 km/h in 15 m is 9 km.
Therefore, the correct option is "B".The bisecting-angle instrument (bai) uses _____ to determine the correct pid angulation.
The bisecting-angle instrument (bai) uses aiming rings to determine the correct pid angulation.
What is Bisecting-angle instrument?This instrument is commonly used in dental medicine and radiography so as to achieve short cone technique x-rays.
It however employs the use of aiming rings for accuracy to determine the correct position-indicating device angulation thereby making it the most appropriate choice.
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What is the inductance of a coil if the coil produces an emf of 2.50 v when the current in it changes from -28.0 ma to 25.0 ma in 12.0 ms?
The inductance of a coil if the coil produces an emf of 2.50 v when the current in it changes from -28.0 ma to 25.0 ma in 12.0 ms is L = 0.566 H
An inductor is a passive electronic component that stores energy in the form of a magnetic field. In its simplest form, an inductor consists of a wire loop or coil. The inductance is directly proportional to the number of turns in the coil.
The SI unit of inductance is Henry abbreviated as 'H'. It is defined as the measure of electric current changes at one ampere per second resulting in an electromotive force of one volt across the inductor.
The expression for induced emf
E=−L (di /dt)
L= E (dt / di )
di = 25 - ( -28) = 53 mA = 53 * [tex]10^{-3}[/tex] A
dt = 12 ms = 12 * [tex]10^{-3}[/tex] sec
E = 2.5 V
L = 2.5 ( 12 * [tex]10^{-3}[/tex] / 53 * [tex]10^{-3}[/tex] )
L = 0.566 H
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How many joules are required to convert 16. 5 g of ice at 0.0°C to liquid water at 32. 0°C?
7718.04 J joules are required to convert 16. 5 g of ice at 0.0°C to liquid water at 32. 0°C
Specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree. The units of specific heat are usually calories or joules per gram per Celsius degree.
Latent heat of fusion, also known as enthalpy of fusion, is the amount of energy that must be supplied to a solid substance (typically in the form of heat) in order to trigger a change in its physical state and convert it into a liquid (when the pressure of the environment is kept constant).
heat require to convert 16.5 g of ice at 0°C to water at 0°C
Q1 = [tex]mH_{f}[/tex] = 16.5 * 334 = 5511 J
heat require to convert 0°C of water to water at 32. 0°C
Q2 = mcΔT = 16.5 * 4.18 *(32-0) = 2207.04 J
Total heat = Q1 + Q2
= 5511 J + 2207.04 J = 7718.04 J
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Read the scenario below and answer the question that follows. susan was in her algebra class preparing to take a test. her instructor, mrs. williams, tells susan, "try hard, even though math can be difficult for women to succeed in." what is the most likely effect of mrs. williams’ comment on susan’s test performance, and why? a. improved performance due to study behavior b. improved performance due to mores c. reduced performance due to stereotype threat d. reduced performance due to cultural shaping please select the best answer from the choices provided a b c d
The correct option is (c) reduced performance due to stereotype threat.
What is a culture of learning?
A culture of learning, or learning culture, is one in which employees continuously seek, share, and apply new knowledge and skills to improve individual and organizational performance.
How does culture affect learning?
Through the rewards and penalties it administers for each distinct conduct, a culture establishes context for behavior. Cultures reinforce appropriate behavior and deter inappropriate behavior via influencing behavior.Why is culture important in learning?
Students learn more deeply about the subject matter when working and learning in a classroom with people from different origins and cultures. Additionally, it teaches students how to participate in a diverse workplace using their unique skills and perspectives.Learn more about culture of learning
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What must the charge (sign and magnitude) of a particle of mass 1. 45 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 660 n/c?
The charge (sign and magnitude) of a particle of mass 1.45 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 660 N/C is -2.19C
A particle with some charge moving in an electric field experience force due to electric field.
For the charged particle to remain stationary the force due to electric field and the weight of the particle should be equal.
Force due to electric field = QE
where, Q is the charge of the particle
E is the electric field = 660N/C
Weight of the particle = mg
where, m is the mass of particle = 1.45g = 0.00145kg
g is the acceleration due to gravity = 10m/s²
Hence, force due to electric field = weight of the particle
QE = mg
⇒ Q × 660 = 0.00145 × 10
⇒ Q = 2.19 C
Since the electric field is downward, hence to balance the charged particle, the force applied should be in the upwards direction. So, this is possible if the charge Q is negative.
So, the charged particle has a charge of -2.19C
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The overall dimming of starlight passing through dust clouds is called?
The overall dimming of starlight passing through dust clouds is Extinction .
To find the answer, we need to know more about the Extinction.
What is Extinction ?Extinction is the electromagnetic radiation that is absorbed and scattered by gas and dust between an emitting astronomical object and the observer. Robert Julius Trumpler first identified interstellar extinction around 1930. However, Friedrich Georg Wilhelm von Struve had identified its effects in 1847, and a number of people had seen its impact on star colors but had not made the connection between it and the general abundance of galactic dust. Extinction in the visual band of frequencies (photometric system) for stars in the Milky Way plane and within a few thousand parsecs of the Earth is approximately 1.8 magnitudes per kiloparsec.Thus, we can conclude that, the overall dimming of starlight passing through dust clouds is Extinction .
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The component of the normal force on the object parallel to the plane balances the friction force on the object.True/False
True. The component of the normal force on the object parallel to the plane balances the friction force on the object at rest.
What is component of normal force parallel to the plane?
An object placed on an inclined plane is subject to three forces, namely;
Normal force acting downwardsComponent of the normal force acting parallel to the planeFrictional force, parallel to the planeNet force acting on the object at rest∑F = 0
mg sinθ - μFₙ cosθ = 0
mg sinθ = μFₙ cosθ
where;
mg sinθ is component of the normal force acting parallel to the planeμFₙ cosθ is frictional force, parallel to the planeThus, the component of the normal force on the object parallel to the plane balances the friction force on the object at rest.
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As additional resistors are connected in parallel to a constant voltage source, how is the power supplied by the source affected?.
As additional resistors are included lined up across a consistent voltage source, there are more ways for current to take.
So more current spills out of the source, and the all out current provided by the source increments.
The power supplied by the battery is (voltage) x (current). So if the voltage is constant and the current increases, the power being supplied must also increase.
What is a resistor?A resistor is an electrical part that cutoff points or manages the progression of electrical flow in an electronic circuit. Resistors can likewise be utilized to give a particular voltage to a functioning gadget like a semiconductor.
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