A violin has a string of length 0.320 m, and transmits waves at
622 m/s. At what frequency does
it oscillate?

What if? if the temperature near the cliff suddenly falls to 0°c, reducing the speed of sound to 331 m/s, what would the initial speed of the rock have to be (in m/s) for the soccer player to hear the sound of the splash 2.90 s after kicking the rock?

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Would it be correct to say the doppler effect is the apparent change in the speed of a wave due to the motion of the source? be sure to fully explain your position using at least 3 complete content related sentences.