The audible range of frequencies is 20 Hz to 20,000 Hz for the human ear. The speed of sound in the air is 330 m/s. There are two sounds. Sound A has a wavelength of 0.5 meters and Sound B has a
wavelength of 0.06 meters. Which of the following is true?
A. You can hear both sound A and sound B.
B. You cannot hear either sound.
C. You can only hear sound A.
D. You can only hear sound B.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )