Amarble, a bowling ball, a basketball, and a baseball are all sitting on the top shelf of a display case. which one has the greatest potential energy?
marble
bowling ball
basketball baseball
cannot be determined

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.