Which of the following statements is/are true?
check all that apply.

1 a potential energy function can be specified for a nondissipative interaction.
2 a potential energy function can be specified for a dissipative interaction.
3 a nondissipative interaction permits a two-way conversion between kinetic and potential energies.
4 a dissipative interaction permits a two-way conversion between kinetic and potential energies.

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

Which of the following statement is false

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2