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what temperature will the contribution of the vibrations of the crystal lattice (within
the Debye theory) and that of the conduction electrons (within the free electron
theory) to the specific heat become equal?
A ball before it is thrown has a gravitational potential energy of 200j. It's kinetic energy when it is thrown into the air is 400j. What is the kinetic energy of the ball when it hits the ground?
Someone uses 8000j of force to lift 400kg 2m off the ground. What is the gravitational potential energy of the object?
A ball goes down a hill 5m in 1.5s. The average acceleration at the top of the hill is 3m/s squared. What is the final velocity and acceleration of the ball?