What did classical physics predict about electron flow as a result of light shining on a metal surface? a. the higher the frequency of light, the more electrons would flow. b. electrons would flow only at certain frequencies. c. more electrons would flow if more light shone on the metal. d. the brighter the light, the fewer electrons would flow.

Which of the statements about waves is true? a. in longitudinal waves, particles move perpendicular to the direction the wave is traveling. b. both transverse and longitudinal waves can travel through water c. electromagnetic waves are a type of longitudinal waves. d. in a transverse wave, particles move parallel to the direction the wave is traveling.

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points