Dr. Brahim and her band, Test Tubes, played every weekend before the pandemic at a sold-out venue in Vegas. The lead instrumentalist used a test tube
(closed-end air column) with a 17.2 cm air column. The speed of sound in the
test tube is 340 m/sec. Find the frequency of the first harmonic played by this
instrument.

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                                         : )