Question

What is the period of vibration of a wave that vibrates 3 times each second?
3 seconds
0.3 seconds
0.03 seconds
30 seconds

Answer 1

help plz :/

Answer 2

If the wave vibrates 3 times per second, it means it completes its period in a third of a second. Answer is 0.3 s. For future reference, the period is the reciprocal of the frequency (e.g. for 3 Hz, the period is 1/3 s).