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A certain pendulum has a potential energy of 20 J when it is at the top of its swing. What is the kinetic energy?
If at the top of the swing the pendulum is STOPPED then it has zero kinetic energy.
Where does the bob have the highest potential energy?
-- If you're talking about a pendulum, then the potential energy is highest and kinetic energy is zero at the ends of the swing, and potential energy is lowest and kinetic energy is highest in the middle of the swing. -- If you're not talking about a pendulum, then the preceding may be completely wrong.
Kinetic energy is the energy of?
Motion.
Energy in the form of motion?
The energy of motion is called kinetic energy.
Describe a stone falling off the tabletop in terms of both kinetic energy and potential energy?
Sitting on the table the stone has potential energy, relative to the ground, of weight times height, mgh. It has zero kinetic energy so its total energy is E = 0 + mgh. When it begins falling it loses potential energy (as it loses height) and gains kinetic energy ( as it picks up speed) so the sum stays the same as initially E = KE + PE = mgh. Just before it hits the ground all of its potential energy is gone and has been transformed into kinetic energy. So the kinetic energy at the bottom (1/2)mv^2 will equal the potential energy at the top.
What change would occur in the kinetic energy of kinetic energy of vapor if a container of vapor is placed at 0 Kelvin?
At 0 Kelvin, all molecular motion stops, so the kinetic energy of the vapor molecules would be zero. Therefore, the kinetic energy of the vapor would be reduced to zero.
When can kinetic energy occur?
When things move. Kinetic energy is energy in motion.
What point in the ride is the kinetic energy of the car zero?
The kinetic energy of the car becomes zero when the car halts. If it halts on top of a hill, the energy changes to potential energy.
Can you have kinetic energy without momentum?
We don't think you can. Here's our reasoning: -- Kinetic energy of an object is [(1/2)(mass)(speed)2]. If kinetic energy is not zero, then mass can't be zero, and speed can't be zero either. -- Momentum of the object is [(mass)(speed)]. If mass isn't zero and speed isn't zero, then momentum isn't zero.
Example for a body with zero momentum and some kinetic energy?
No solution. Zero momentum (MV) means either zero mass or zero velocity. Either one results in zero kinetic energy (1/2 MV2).
Can a body have kinetic energy without having momentum?
Momentum = (mass) x (speed) Kinetic Energy = 1/2 (mass) x (speed)2 It looks like the only way a body can have zero momentum is to have either zero mass or else zero speed, and if either of those is zero, then that makes the KE also zero as well, too. So the answer to the question is apparently: no.
Why velocity of a mass attached to a spring is maximum at mean positions and zero at extreme positions?
This can easily be understood with conservation of energy. Assuming that no energy is lost, potential energy is continuously converted to kinetic energy, and vice versa. At the mean position, the potential energy is zero, therefore the kinetic energy (and hence the velocity) is at maximum.This can easily be understood with conservation of energy. Assuming that no energy is lost, potential energy is continuously converted to kinetic energy, and vice versa. At the mean position, the potential energy is zero, therefore the kinetic energy (and hence the velocity) is at maximum.This can easily be understood with conservation of energy. Assuming that no energy is lost, potential energy is continuously converted to kinetic energy, and vice versa. At the mean position, the potential energy is zero, therefore the kinetic energy (and hence the velocity) is at maximum.This can easily be understood with conservation of energy. Assuming that no energy is lost, potential energy is continuously converted to kinetic energy, and vice versa. At the mean position, the potential energy is zero, therefore the kinetic energy (and hence the velocity) is at maximum.
Would a book on a table one meter above the floor have more kinetic energy than a book resting on a floor?
No. Kinetic energy would be zero in both cases. The book in the higher position has more potential energy.No. Kinetic energy would be zero in both cases. The book in the higher position has more potential energy.No. Kinetic energy would be zero in both cases. The book in the higher position has more potential energy.No. Kinetic energy would be zero in both cases. The book in the higher position has more potential energy.
What change would occur in the kinetic energy of vapor if a container of vapor is placed at 0 Kelvin?
At 0 Kelvin, the kinetic energy of the vapor would decrease to the minimum possible value as all molecular motion stops. This is known as absolute zero, and at this temperature, particles have minimal movement and consequently have minimal kinetic energy.
When would a gas have zero kinetic energy?
A gas, or any matter, would have zero kinetic energy when its temperature reaches absolute zero, zero degrees Kelvin. While such matter is theoretically possible, it has never been observed since any observations of such matter would require some sort of energy transfer, which would be impossible for a substance with zero kinetic energy In practically all these kind of questions the unspoken implication is that we are talking of thermal kinetic energy. Even at absolute zero, there would be kinetic energy due to the earth's rotation, its movement round the sun, the movement of the sun and of the galaxy, whatever that implies about relativity and expansion of space and so on. Even thermal motions have this nasty little hiccup, known as the zero point motion.
Is total energy of revolving electron in an atom zero?
actually total energy is the sum of potential energy and kinetic energy....potential energy= -2*kinetic energy . By using this relation you will get that sum of potential and kinetic energy is equal to the magnitude of kinetic energy and it is less than zero...hope this will be enough for you....
What would to the kinetic energy of an object if it stopped moving?
Zero.
