52 Answered Questions for the topic kinetic energy

Kinetic Energy Physics Atoms Frequency

10/10/16

Structure of atoms related doubt
Photon is incident have frequency 1×?10?^14 sec^(-1). Threshold frequency of metal is 5 × ?10?^13 sec^(-1).find kinetic energy of electron 2.electron in hydrogen atom jump from excited state n to... more
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08/29/16

For each postulate of the Kinetic-Molecular Theory of Gases write a further description or give a real world example of how that postulate can be observed.
Postulates of the Kinetic-Molecular Theory of Gases:   1. Gas particles are extremely small and have relatively large distances between them. 2. Gas particles act independently of one another... more
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Kinetic Energy Physics Meters Kilograms

06/05/16

What is the minimum kinetic energy..?
A diagram shows a moving 5.00-kilogram cart at the foot of a hill 10.0 meters high. What is the minimum kinetic energy needed for the cart to move from its current position to reach the top of the... more
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Kinetic Energy Math Science Physics

03/28/16

Physics question below
  You slide a block with a mass of m down an incline plane with a height of h that has a length of L. If there is a kinetic friction f acting on the object as it slides down the incline then at... more
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03/17/16

More SPE, KE or GPE?
1. Compared to a marble released from a height of .5 m, a marble released from a height of 1 m has:   a) More SPE at the top of the fall b) More KE at the top of the fall c) More GPE at the top... more
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Kinetic Energy Physics Velocity Mass

02/17/16

Help explaining physics
Question: As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s, the magnitude of the bicycle's:   Multiple Choice: a. total energy remains the same b.... more
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02/13/16

How far up the ramp (in the direction along the ramp) does the block go before it comes to a stop?
A 4.25-kg block is sent up a ramp inclined at an angle θ = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. Between the block and the ramp, the coefficient of... more
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Kinetic Energy Physics Mass Collision

12/17/15

Explain physics question and answer.
Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction.   A car traveling at 20 m/s has 1,000 J of... more
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Kinetic Energy Science Physics Electrons

12/05/15

Kinetic energy of particles and objects
Calculate the rest energy and the kinetic energy of: a) A 100g ball travelling with the speed of 100m/sb) An electron travelling at a speed of 0.999c. Which one has greater rest energy? Which one... more
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Kinetic Energy Physics Velocity Mass

11/18/15

What happens to the cart's kinetic energy when the mass/velocity of the cart triples?
A cart with a mass of M is traveling at a velocity of V.   a) What happens to the cart's kinetic energy when the mass of the cart triples? b) What happens to the cart's kinetic energy when the... more
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Kinetic Energy

11/16/15

Two balls collide in a totally inelastic collision
Two balls collide in a totally inelastic collision. The first ball has twice the mass of the second. The first ball has velocity v (to the right), and the second has velocity −v (to the left). What... more
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Kinetic Energy Physics Distance Mass

11/07/15

A person with a mass of 60.0 kg is traveling at 18 m/s.
A person with a mass of 60.0 kg is traveling at 18 m/s.   a) How much kinetic energy does this person have?   b) How much work is required to stop the person?   c) Calculate the force... more
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Kinetic Energy Potential Energy

07/16/15

Physics-Conservation of energy and charge
A small ball has a mass of 5.0 x 10-8 kg and a charge of 0.0 x 10-5 C. It enters a box with an initial speed of 1.2 x 104 m/s. The point where the charge leaves the box is at a voltage 350 kV... more
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Kinetic Energy Math Chemistry Physics

07/08/15

Physics: Kinetic Theory
Kinetic theorya. What is the average kinetic energy of a monatomic gas at a temperature of 354 K?b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed?c. What temperature... more
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Kinetic Energy Math Chemistry Physics

07/05/15

Physics: Kinetic Theory
Kinetic theory a. What is the average kinetic energy of a monatomic gas at a temperature of 354 K? b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed? c. What... more
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Kinetic Energy Physics Ratios Velocity

05/22/15

angular velocity physics question PLEASE HELP??
Dart hits wheel. In terms of m, M, v0, and R (of wheel), find:   A) angular speed of wheelB) ratios of initial and final kinetic energies
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04/18/15

Find the velocity of a thrown baseball?
In physics, transitional kinetic energy E(in joules) is given by the equation: E=1/2mv2,where m represents mass(in kilograms), and v the velocity (in meters per second). Find the velocity of a... more
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Kinetic Energy Physics Energy Kinematics

04/16/15

Physics-Energy/ conservation of energy
Question: At a water park, Hugo climbs a 15.00m springboard, in 22.00s, to execute his famous THUNDER CANNON BALL. Hugo jumps up at 6.000m/s [up] off the end of the diving board and propels his... more
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Kinetic Energy

01/09/15

Kinetic energy (KE) Questions
Hey   Can someone please help me with this questions. Also explain how they got to the answer. I've spent hours on it but still not getting it. Any help would be brilliant.   Kinetic energy... more
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01/04/15

What is the energy transfer of a battery rolling out of a rolling cup?
A cup is on its side. inside the cup is a double A battery. An object hits the cup forcing the cup to roll. As the cup rolls the batter rolls out. What is the energy transfer of the battery rolling... more
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Kinetic Energy

10/08/14

Energy of an object
If the kinetic energy of an object is tripled, by what factor is its speed increased?   b) if the speed of an object is reduced to ¼ its original value, by what factor does the kinetic energy... more
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Kinetic Energy

08/25/14

The series-200 train has one of the highest operating speed: 76.4 m/s. If a series-200 train has a maximum kinetic energy of 2.78 x 109 J, what is its mass?
The series-200 train has one of the highest operating speed: 76.4 m/s.  If a series-200 train has a maximum kinetic energy of 2.78 x 109 J, what is its mass?
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08/06/14

Physics Work and Energy Question. Please check my answer.
A 5g apple is thrown straight upward with an initial velocity of 20 m/s @ a point of 1.5m height from ground. Ignoring air friction, find:   a. Total mechanical energy of the apple at initial... more
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Kinetic Energy Physics Work Energy

08/06/14

Physics Work and Energy Question!
A boy pulls a 10.0 kg book rack at rest on a smooth floor with a constant horizontal force of 1.2N starting from rest. Compute the change in kinetic energy of the box after the boy has pulled it a... more
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Kinetic Energy

07/06/14

help with kinetic energy
if the average kinetic energy of a substance changes,   a.  its temperture changes b.  it may change phase c.  thermal energy has been transferred  into or out of the substance d.  all of... more
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