Which example best illustrates that light behaves like particles?

a. light bends as it strikes a window.
b. light bounces off a white cement sidewalk.
c. light travels in space at a speed of about 3.0 x 108 m/s.
d. light increases in speed as it moves through matter.

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false