Multiple choice scenerios (circle the correct answer(s)) q1. (14 pts) a light aluminum ball and a heavy lead ball of the same size are allowed to roll down a. an incline. the ball with the greatest angular velocity when halfway down the incline is a) aluminum (2 pts) 8) lead d) not enough information c)same for both when they are halfway down the incline, they will have identical a) potential energies. (4 pts) c) momentum d) inertias b) kinetic energies. enone of the above choices b. two identical pool balls, each moving at 3 m/s, roll toward each other and collide. suppose after bouncing apart, each moves at 6 m/s. this collision violates conservation of (4 pts) a) momentum. d) none of the these. b) energy. c) both momentum and energy a car that travels twice as fast as another when braking to a stop will skid c. (4 pts) b) four times as far. c) depends on the mass of the cars a) twice as far.

The harmonic motion of a particle is given by f(t) = 2 cos(3t) + 3 sin(2t), 0 ? t ? 8. (a) when is the position function decreasing? (round you

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called