50 points according to kinetic theory, in a closed system, what happens when two atoms collide?

question 5 options:

energy is transferred.

energy is lost.

there is a net energy change.

they each vibrate faster.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a. the kinetic energy increases. b.the kinetic energy decreases. c.the kinetic energy remains the same. d.the kinetic energy is always zero.

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.