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.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

neither accurate nor precise.