7) Consider a 2.500 m-long tube that is open on one end in a laboratory on a day when the speed
of sound is 345m/s

a) Sketch the fundamental, or first harmonic, for this tube.

b) How many wavelengths constitute the fundamental?

c) Calculate the frequency of the fundamental.

d) Calculate the frequency of the third harmonic.

The speed of light can be used to measure the

How can you measure the amplitude of a longitudinal wave?

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano.the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force