Unit Test — Unit test Answers

Which change will decrease the speed of a sound wave traveling through a gaseous matter?

Two waves are shown. Each wave has the same frequency and velocity. However, Wave B carries more energy.

A wave has a wavelength of 4.9 m and a velocity of 9.8 m/s. The medium through which this wave is traveling is then heated so that the velocity is doubled.If the frequency remains constant, what is the wavelength of the heated wave?

A band director instructs students to play a pitch louder. How will the sound wave change when the band plays the same pitch louder?

Rohit is trying to tune an instrument. He strikes a tuning fork and then plays a note that almost matches it. Rohit hears the volume of the two waves beating, which sounds like "wah-wah-wah-wah."