Question

The frequency of a source of sound is 200 hertz how many times does it vibrate in 20 sec

Answer 1

Answer:

the formula for number of vibration = frequency × time

Explanation:

so the answer would be 200×20 = 4000

Answer 2

Answer:

The formula is

Explanation:

n=1/T.....where n=frequency and T=time period

Given:n=200 hertz and T=20 sec

according to formula n=1/T

200=1/20

200*20=4000 Hz.

Please mark me as a Brainlist.