The dripping faucet onto the wave causes the frequency to stay the same throughout, it just moves up and down.
When a wave is passed through the single slit, diffraction occurs. The light spreads out and after it passes through the slit, it interferes with itself.
I need help with this physics question ASAP. Thanks!
From the calculation, the horizontal distance is 310 m.
What is the range of a projectile?A projectile has to do with an object that is thrown at an angle. Now we know that the range of the projectile is given by the formula; R = u^2sin2θ/g
We we know that;
g = acceleration due to gravity
θ = angle
u = velocity
R = (60)^2 sin2(30)/10
R = 310 m
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According to dr. berenson's study, when obese children reach adulthood, how many times more likely are they have high-blood pressure?
Dr. Berenson's study showed that when obese children reach adulthood they are 8 times more likely to develop high blood pressure than healthy weight children.
Dr. BerensonDr. Berenson (September 19, 1922 – November 22, 2018) was an American cardiologist, heart researcher, and public health expert who specialised in determining the root causes of cardiac conditions. According to Dr. Berenson's foundational research, childhood routines and habits are the root cause of adult heart disease. He also found that compared to people with no cardiovascular risk factors, those with three or four cardiovascular risk factors had atherosclerosis that was noticeably more evident. Dr. Berenson began teaching at Tulane University after being released from the U.S. Navy in 1948. He started a two-year research fellowship at the University of Chicago in 1952, where Dr. Berenson worked on rheumatic fever investigations with Albert Dorfman, the department's chief.
According to dr. berenson's study, when obese children reach adulthood, how many times more likely are they have high-blood pressure?
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Calculate the angular separation θ1 at which two point sources of wavelength 600 nanometers are just resolved when viewed through a circular aperture of diameter 1. 5 centimeters.
The angular separation is [tex]4.88 * 10^{-5} rad[/tex]
What is angular distance formula?
The formula is θ=s/r, where, θ is Angular Displacement, s is the distance traveled by the body, and. r is the radius of the circle along which it is moving.
What is meant by angular resolution?
The angular resolving power (or resolution) of a telescope is the smallest angle between close objects that can be seen clearly to be separate. Resolution is limited by the wave nature of light.
The angular separation is calculated as given below.
θ = 1.220 λ/d
Where λ is the wavelength and d is the diameter of the lens aperture.
θ1 = [tex]1.220 * \frac{600 * 10^{-9} }{1.5 * 10^{-2} }[/tex]
= 4.88 × [tex]10^{-5}[/tex] rad
Therefore, The angular separation is 4.88 × [tex]10^{-5}[/tex] rad.
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A piece of purple plastic is charged with 3. 13×106 extra electrons compared to its neutral state. what is its net electric charge (including its sign) in coulombs?
A piece of purple plastic is charged with 3. 13×106 extra electrons compared to its neutral state, then the net electric charge in coulomb would be - 5.008×10⁻¹³ coulombs.
What is an electric charge?Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge (commonly carried by protons and electrons respectively). Unlike charges attract one another while like charges repel one another. We refer to an object as neutral if it has no net charge.
The charge on one electron is -1.6 ×10⁻¹⁹ coulomb.
Then the charge on the 3.13×10⁶ extra electrons compared to its neutral state
=-1.6×10⁻¹⁹ ×(3.13×10⁶)
As given in the problem A piece of purple plastic is charged with 3.13×10⁶ extra electrons compared to its neutral state then the net electric charge in coulombs would be - 5.008×10⁻¹³ coulombs.
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A car travels one third of a path with speed of 50 ms and two third of path with 20ms , its average speed will be.
a. 45ms
b. 30ms
c. 25ms
20ms
Its average speed will be 25 m/s approximately. The correct answer is option C
What is Average Speed ?Average speed is the ratio of total distance travelled to the total time taken. It is a scalar quantity and the S.I unit is m/s
Given that a car travels one third of a path with speed of 50 m/s and two third of path with 20m/s.
If the car travels one third of a path with speed of 50 m/s, then the time taken will be
Speed = distance / time
Time = distance / speed
Time = 1/3 ÷ 50
Time = 6.67 x [tex]10^{-3}[/tex] s
If the car travels the remaining two third of a path with speed of 20 m/s, then, the time taken will be
Time = distance / speed
Time = 2/3 ÷ 20
Time = 0.0333
Total time = 0.03333 + 0.00667
Total time = 0.04
The total distance travelled = 1
Average speed = Total distance travelled ÷ Total time
Average speed = 1/0.04
Average speed = 24.99979 m/s
Therefore, its average speed will be 25 m/s approximately.
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John and henry are both workers at a retail store. their direct supervisor has told them to maintain quick service above all else. later, their customer relations director tells them that they should always work to maintain excellent customer service above all else. both john and henry are confused as to what their priorities should be. this is an example of a conflict based on ______. a. personality differences b. power struggle c. poor communication d. jealousy please select the best answer from the choices provided a b c d
Poor communication
This is an example of a conflict based on poor communication. Because of the reason is that in customer service a person should have skills to communicate in a good manner. It is important because if the person has this skill that he can communicate with others best.
Then he can impress the customer and realize customer about the qualities of their product. In every kind of business, communication skills play major role. Therefore, both john and Henry are confused as their priorities should be on focus to improve their communication skills.
What is poor communication ?When there is a disconnect between what is said and what is heard, poor communication frequently results. In other words, the individual to whom the communication is being directed misinterprets what you are trying to convey. There is no longer mutual understanding.
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__ modified the concept by adding an internal combustion engine and marketing hybrids that were part electric and part gas powered
Hybrid
Hybrid modified the concept by adding an internal combustion engine and marketing hybrids that were part electric and part gas powered.
The driving wheels of hybrid vehicles receive power from their drivetrains. A hybrid car has numerous sources of propulsion.There are numerous hybrid configurations. A hybrid vehicle might, for instance, get its energy from burning gasoline while alternating between an electric motor and a combustion engine.Although they have primarily been employed for rail locomotives, electrical vehicles have a long history of integrating internal combustion and electrical transmission, like in a diesel-electric power-train. Because the electric drive transmission directly substitutes the mechanical gearbox rather than serving as an additional source of motive power, a diesel-electric powertrain does not meet the definition of a hybrid.Only the electric/ICE hybrid car type was readily accessible on the market as of 2017. One type used parallel operation to power both motors at the same time. Another ran in series, using one source to supply power solely and the other to supply electricity. Either source may act as the main driving force, with the other source serving to strengthen the main.To learn more about hybrid vehicles visit:
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A tumbleweed rolls from x equals 25.6 m to x equals -14.4 m in 7.90 seconds what was its average velocity
Answer:
5.06 m/s
Explanation:
velocity = distance / time
= ( 25.6 - - 14.4) / 7.90 = 5.06 m/s
What happens to the density of a a gas when a fixed mass is compressed into a smaller volume?
a) density stays the same.
b) density increases.
c) density decreases.
A gas when a fixed mass is compressed into a smaller volume then b) density increases.
Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
Mass is the measure of object's inertia, more the mass more the inertia. It is a property of material , so it does not change with place. SI unit is 'kg'. It is a scalar quantity.
Volume is a three-dimensional quantity that is used to measure the capacity of a solid shape. It means the amount of three-dimensional space a closed figure can occupy is measured by its volume.
Density = mass / volume
if mass is fixed, then mass = constant
Density will be inversely related to volume
hence , on compression , volume get decreased but mass is constant hence , density will increase
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A particle moving in a straight line with uniform deceleration has a velocity of 40m/s at point p, 20m/s at point q and comes to rest at point R where QR=50m .Calculate the 1.Distance PQ 2.Time taken to cover PQ 3.Time taken to cover PR
solve for me pls
Answer: 150 metres/5 seconds/5 seconds
Explanation:
Find the acceleration/deceleration
v^2 = u^2 + 2as; v=final velocity u=initial velocity a=acceleration s=distance
0^2 = 20^2 + 2*a*50
a = -4 m/s Therefore, the particle is decelerating at 4 m/s
From there, we can work out PQ
Using the same equation, we get that
20^2 = 40^2 + 2*-4*s
s = 150 m so Distance PQ is 150 metres
Finding the time taken to cover PQ and PR uses a different equation
v = u + at; t = time and everything else is the same
20 = 40 - 4t
t = 5 s so Time taken to cover PQ is 5 seconds
0 = 20 - 4t
t = 5 s so Time taken to cover PR is also 5 seconds
In a naturally converging beam, the distance from the face of the transducer to the narrowest point of the beam is known as?
Answer:
focal length
Explanation:
This describes focal length of the beam
Metallic gold crystallizes in a face-centered cubic lattice, with one au atom per lattice point. if the edge length of the unit cell is found to be 408 pm, what is the metallic radius of au in pm?
The metallic radius (r) of au is 144.2pm
A face-centered cubic unit cell structure is made up of atoms arranged in a cube with six additional whole atoms placed in the centre of each cube face and a fraction of an atom at each of the cube's four corners. Eight additional unit cells share the atoms at the cube's corner.
Atoms in an FCC crystal are in contact along the unit cell's diagonal. 4r = √2 a, where r is the radius of an atom and a is the edge length of a unit cell.
Putting the values in the above expression,we get
r = √2×408 / 4
r = [tex]\frac{1.414*408}{4}[/tex]
r = [tex]\frac{576.9}{4}[/tex]
r = 144.2 pm
Therefore, The metallic radius (r) of au is 144.2pm
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What electronic components are often used to prevent large voltage spikes from being produced when the current flow through an inductor is suddenly terminated?
The electronic components are often used to prevent large voltage spikes from being produced when the current flow through an inductor is suddenly terminated is diode.
Inductive fly back refers to the voltage spike created by an inductor when its power supply is suddenly reduced or removed. This voltage spike occurs because the current flowing through the inductor cannot change instantly. The rate at which the current can change is limited by the inductor's time constant.
Diodes are used to protect circuits by limiting the voltage and to also transform AC into DC. Semiconductors like silicon and germanium are used to make the most of the diodes. Even though they transmit current in a single direction, the way with which they transmit differs. There are different kinds of diodes and each type has its own applications.
Voltage spikes occur when the current flow through an inductor stops and the current decreases exponentially. The electronic device "diode" is used to prevent induced voltage spikes because of the current flow in the forward direction and stops the current in the reverse direction.
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The electric potential at a certain point is given by v = –7. 5x2 3x, where v is in volts and x is in meters. what is the electric field at that point?
The electric potential at certain point is given by,v=-7.5x²-3x ,where v is in volts and x is in meters. then the electric field at that point is -(15x+3).
Given,
The electric potential at certain point is given by,
v=-7.5x²-3x .
where v is in volts and x is in meters.
We know,
electric potential (v) =electric field ×radius
Electric potential is defined as the amount of work needed to move a charge from reference point to the specific point against an electric field.
Also, electric field (E) =dv/dx
Electric field at a point is the force experienced by the unit positive charge placed at that point.
E=d(-7.5x²-3x)/dx=-15x-3
Thus ,the electric field at that point is given by -(15x+3 ).
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Disclaimer:the data in the question is incorrect .here is the complete question .
Question: the electric potential at a certain point is given by v=-(7.5x²+3x).where v is in volts and x is in meters.what is the electric field at that point?
According to the indiana driver’s manual, a passenger car traveling at 55 mph will take approximately _________ to brake to a complete stop.
A passenger car traveling at 55 mph will take approximately 130 - 140 feet to brake to a complete stop.
What is the braking distance?Indiana is one of the states that compose the United States of America. We know that in the United States, the laws are different depending on the state in which a person resides and so does the the traffic laws and the driver's manual.
Generally, a driver ought to apply the brake a good distance away from the obstacle depending on the speed of the driver. We know that a higher speed immediately implies that the driver must start braking early enough.
Hence, according to the Indiana driver’s manual, a passenger car traveling at 55 mph will take approximately 130 - 140 feet to brake to a complete stop.
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Chapter: The Gas Laws
The air in a bicycle tyre has a volume of 1000 cm^3 and a pressure of 2.5 atmospheres. If the air is released (at the same temperature) so its pressure is 1.0 atmosphere, what is the volume of the air?
A bicycle pump has a volume of 100 cm^3 and is now used to pump up the tyre. After 1 stroke of the pump, what is the pressure in the tyre?
1. The volume of the air is 2500 cm³
2. The pressure in the tyre is 2.27 atm
Boyle's law equationP₁V₁ = P₂V₂
Where
P₁ is the initial pressure V₁ is the initial volume V₂ is the new volume P₂ is the new pressure 1. How to determine the new volume Initial pressure (P₁) = 2.5 atmInitial volume (V₁) = 1000 cm³New pressure (P₂) = 1 atmNew volume (V₂) = ?
P₁V₁ = P₂V₂
2.5 × 1000 = 1 × V₂
V₂ = 2500 cm³
Thus, the volume of the air is 2500 cm³
2. How to determine the new pressureInitial pressure (P₁) = 2.5 atmInitial volume (V₁) = 1000 cm³New volume (V₂) = 1000 + 100 = 1100 cm³New pressure (P₂) = ?P₁V₁ = P₂V₂
2.5 × 1000 = P₂ × 1100
Divide both sides by 1100
P₂ = (2.5 × 1000) / 1100
P₂ = 2.27 atm
Thus, the pressure in the tyre is 2.27 atm
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A 60-m long wire is coiled so that it makes a coil containing 140 square loops, one on top of each other. if the wire carries a current of 21 a, what is the magnetic dipole moment of the coil?
A 60-m long wire is coiled so that it makes a coil containing 140 square loops, one on top of each other. if the wire carries a current of 21 a, the magnetic dipole moment of the coil will be 0.24 Am2
Dipole moment = i * A
Area = ?
given total length of the wire = 60 m number of square loops = 140total length of the wire = n * ( circumference of one loop) circumference of one loop = total length of the wire / n = 60 / 140 = 0.429 m circumference of one loop = 4 * (side of the square ) 0.429 = 4 * a a = [tex]0.107 m[/tex]
Area of loop = [tex]a^{2}[/tex]= [tex](0.107)^{2}[/tex] = [tex]0.01145 m^{2}[/tex]
Dipole moment = i * A = 21 * 0.01145 = 0.24 A [tex]m^{2}[/tex]
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The voltage drop across an inductor in a circuit with a dc voltage source at time>> 5*time-constant is:_________
The voltage drop across an inductor in a circuit with a dc voltage source at time>> 5*time-constant is more than as compared to first case because the voltage across the inductor is proportional to the rate of change of current which is a maximum at the start when the current and the voltage across the resistor are zero.
As time progresses the current increases at a slower rate as does the voltage across the resistor but the voltage across the inductor decreases.
The voltage drop is proportional to the current, which is the rate-change of the charge. Inductors: V = L (DI/Dt). The voltage drop across the inductor is proportional to the rate-change of the current.
How do you calculate voltage drop in an inductor?The formula which calculates the inductor voltage is
V= Ldi/dt,
where,
V is the voltage across the inductor,
L is the inductance of the inductor,
di/dt is the derivative of the current flowing across the inductor.
Thus from the above conclusion we can say that The voltage drop across an inductor in a circuit with a dc voltage source at time>> 5*time-constant is more than as compared to first case because the voltage across the inductor is proportional to the rate of change of current which is a maximum at the start when the current and the voltage across the resistor are zero.
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what kind of energy is stored when you squeeze a mattress
Answer:
elastic energy
Explanation:
hope it helps you
What is the total energy transported per hour along a narrow cylindrical laser beam 2. 40 mm in diameter, whose b-field has an rms strength of 1. 30×10−10 t?
The total energy transported per hour along a narrow cylindrical laser beam 2. 40 mm in diameter, whose b-field has a RMS strength of 1. 30×10−10 will be 6.40 × 10⁻⁸J.
Intensity for an electromagnetic wave is energy crossed per second in the direction perpendicular to the propogation of electromagnetic wave which is passing per unit area.
The Intensity for an electromagnetic wave is given by:
I = cε₀E₀²
where c is the speed of light,
E₀ is the maximum value of the electric vector
ε₀ is the permitivitty of medium
I is the intensity
We know that, E = Bc
where, B is the magnetic field
Hence on substituting into the formula:
I= cε₀E₀²
⇒ I= c³ε₀B²
Given,
B = 1.30×10⁻¹⁰ T
So,
I = (3 X 10⁸)³ X (8.85 X 10⁻¹²) x(1.10×10⁻¹⁰)²
⇒ I = 96.37 × 10⁻⁸ W/m²
Energy transported per unit hour is :
E= AIt
where A is the area of beam = πr²
r is the radius of beam used, r = 1.20mm = 0.0012m
t is the time = 1hr = 3600s
On substituting,
E = 2.891 × 10⁻⁶ × πr² × 3600
E = 2.891 X 10⁻⁶ × 3.14 × (0.0012)² x (3600)
E = 6.40 × 10⁻⁸J
Hence, total energy transported per hour along a narrow cylindrical laser beam is 6.40 × 10⁻⁸J.
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Overhead is applied to work in process based on the predetermined rate times standard activity allowed in a ______ costing system
Overhead is applied to work in process based on the predetermined rate times standard activity allowed in a standard costing system.
A standard cost is a fixed price per unit of direct materials, fixed price per direct labour hour, and fixed price per hour of overhead that is based on predicted quantities of direct materials and projected direct labour time.
Top management may find a standard cost system useful for planning and decision-making. easier and more reasonable inventory measurements. Compared to an actual cost system, a standard cost system makes inventory valuation simpler. Unit costs for batches of identical products may differ significantly under an actual cost system.
Therefore,Overhead is applied to work in process based on the predetermined rate times standard activity allowed in a standard costing system.
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A light bulb operating at 110 v draws 1. 40 a of current. what is its resistance?
the resistance of the circuit containing 110V and 1.42A current will be 78.57 ohm.
To find the answer, we need to know more about the Ohm's law.
How to find the resistance of the circuit?Ohm's law states that, the potential difference across the ends of the conductor is proportional to the current through the conductors.[tex]V[/tex]∝ [tex]I[/tex]
[tex]V=IR[/tex]
where, R is the proportionality constant called resistance of the circuit.
Given that, voltage is 110V, and current is 1.40A, then the resistance will be,[tex]R=\frac{V}{I} =\frac{110}{1.40}=78.57Ohm[/tex]
Thus, we can conclude that, the resistance of the circuit containing 110V and 1.42A current will be 78.57 ohm.
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Select the correct answer. jay bought a toy car. to make the car move, he must turn a key attached to a spring. turning the key winds the spring tight. the toy car moves when the key is released and the spring unwinds. what’s the main transformation of energy in this example? a silver color kids pedal car with a key to run it a. chemical energy to electric energy b. chemical energy to motion energy c. electric energy to motion energy d. electric energy to potential energy e. potential energy to motion energy
The main transformation of energy is chemical energy to motion energy.
How does the chemical energy is converted to motion energy?
Jay's body converted chemical energy into mechanical energy to wind up the key. Mechanical energy in the key's winding was transformed into potential energy in the spring. The spring then strives to release itself, and as the toy car rolls forward, the potential energy is transformed into kinetic energy or motion energy.
What is chemical energy?
Chemical energy is the energy that is released when chemical substances engage in a chemical reaction and change into other substances.
What is potential energy?Potential energy is the power that an object can store as a result of its position in relation to other objects, internal tensions, electric charge, or other circumstances.
What is kinetic energy?The energy that an object has as a result of motion is known as kinetic energy. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.
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Hope this is correct.
Two wires meet at a junction, merging into one wire, and 6 a and 4 a flow into the junction. How much current flows out of the junction?
The current flows out of the junction will be Ten Ampere.
To find the answer, we have to know about the Kirchoff's Current Law (KCL).
What is Kirchoff's Current Law (KCL)?KCL states that, in any electrical network, the algebraic sum of currents meeting at a junction will be equal to zero.We can say that the incoming current flow will be equal to the outgoing current flow.In the question it is given that two wires meet at a junction with 4A and 6A currents, merging into one wire and going out.Thus, the total incoming current will be 4+6=10A, and as per KCL which is same as the outgoing current.Thus, we can conclude that the current flows out of the junction will be Ten Ampere.
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the ball is thrown up . the direction of g will be ? 1. vertically downward 2. vertically upward 3. horizontal 4. nine of these
Answer:
1 because gravity pulls the object down towards the centre of the Earth.
What is the free energy of activation of a one-step reaction? how is it qualitatively related to the rate constant of the reaction?
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Type the correct answer in the box. use numerals instead of words. anne has a sample of a substance. its volume is 20 cm3, and its mass is 100 grams. what is the sample’s density? the sample’s density is g/cm3.
The density of sample is 5 g/cm3
Given:
volume of sample = 20 cm3
mass of sample = 100 grams
To Find:
density of sample
Solution: Density is the measure of how much “stuff” is in a given amount of space. For example, a block of the heavier element lead (Pb) will be denser than the softer, lighter element gold (Au). A block of Styrofoam is less dense than a brick. It is defined as mass per unit volume
density = mass/volume
d = 100/20
d = 5 g/cm3
So, density of sample is 5 g/cm3
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An airplane flies with a velocity of 55.0 m/s [35o N of W] with respect to the air (this is known as air speed). If the velocity of the airplane according to an observer on the ground is 40.0 m/s [53o N of W], what was the wind velocity?
The wind velocity of the plane in discuss can be evaluated by means of the air velocity if the plane and the observed velocity is; 20.98m/s.
What is the wind velocity of the according to the observed velocity?It follows from the task content that the air velocity of the plane in discuss is; 55.0 m/s [35o N of W] while the observed velocity is; 40.0 m/s [53o N of W].
Hence, the components of both velocities can be evaluated as follows;
55.0 m/s [35o N of W] = (55cos35, 55sin35) = (45.05, 31.55)
40.0 m/s [53o N of W] = (24.07, 31.95)
Hence, the wind velocity can then be evaluated as follows;
Wind velocity = (24.07 - 45.05, 31.95- 31.55)
Wind velocity = (-20.98, 0.40)
The wind velocity would therefore have a magnitude of; √(-20.98)² + (0.40)²
= 20.98 m/s.
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If a disk rolls smoothly down a ramp, how is its acceleration related to its angular acceleration?
If a disk rolls smoothly down a ramp, the acceleration is related to its angular acceleration in such a way that It is equal to the product of the angular acceleration to the radius of the disk.
Linear acceleration is defined as the uniform acceleration caused by a moving body in a straight line. There are three equations that are important in linear acceleration depending upon the parameters like initial and final velocity, displacement, time and acceleration.
Angular Acceleration is defined as the time rate of change of angular velocity. It is usually expressed in radians per second per second. Thus, α = d ω/ d t. The angular acceleration is also known as rotational acceleration.
Its equal to the product of the angular acceleration to the radius of the disk.
This equation mean that linear acceleration and angular acceleration are directly proportional. The greater the angular acceleration is, the larger the linear (tangential) acceleration is, and vice versa.
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What is the speed of light in crown glass if the index of refraction for crown glass is 1. 52? provide the solution: ___________ x 108 m/s
The speed of light in crown glass with the index of refraction is 1.97×10^8 m/s.
Given index of refraction= 1.52
speed of light in vaccum= 3×10^8 m/s
speed of light in medium=c/n= 3×10^8/1.52= 1.97×10^8 m/s
About index of refraction:
The ratio of the speed of light in a vacuum to that in a second medium with a higher density is used to compute the refractive index (also known as the index of refraction). In mathematical formulae and descriptive writing, the letter n or n' is most frequently used to represent the refractive index variable.
The index of refraction controls how much light is refracted or twisted when it enters a substance.
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