Suppose Galileo's pulse rate was 75 beats per minute.

A. How many beats per second is this?

B. What is the time in seconds between consecutive pulse beats?

C. How far (in meters) does an object fall in this time when dropped from rest?

D. What is this distance in feet (use the conversion factors on the inside front cover)?

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.