Question

A speaker vibrates at a frequency of 200hz what is it's period

Answer 1

♥ Here is our formula:
♥ 200 Hz = 200 cps (Cycles per second)
♥ Therefore we have:
♥ 1/200 = 0.005 seconds 
♥ And if that is not a answer choice, you can also write it down as 5 milliseconds.