Which of the following best describes the momentum of two bodies after a two-body collision if the kinetic energy of the system is conserved?
a. must be less
b. must also be conserved
c. might also be conserved
d. is doubled in value

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Decreased sensitivity to an unchanging stimulus is known as

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block