When does a skydiver achieve terminal velocity? a. when gravity equals air resistance b. when gravity is greater than air resistance c. when air resistance acts on the diver and gravity does not d. when gravity acts on the diver and air resistance does not

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.