Answer: The distance between the man and the plane increasing at a rate of 400ft/s
Explanation: Please see the attachments below
Answer:
Explanation:
Wavelength is the distance between two successive crests of a wave or the <em>distance</em> it takes before the wave's shape repeats itself.
It's given as the velocity of the wave divided by it's frequency.
-Distance between any two wave crests.
-velocity, speed at it the wave is moving in a given direction.
-frequency, number of waves going through a certain point in a acertain time. Measured in cycles/sec or Hz
f=750Hz
The energy used to plunk guitar strings to make sound is mechanical energy which gets converted to kinetic energy and finally to sound energy which produce the sound.