Question

A rope vibrates every 0.5 s. what is the frequency of the waves?

Answer 1

The rope vibrates every 0.5 s: it means that its period is

$T=0.5 s$

The frequency of an oscillation is equal to the reciprocal of the period:

$f=\frac{1}{T}$

Therefore, if we substitute T=0.5 s in the formula, we get:

$f=\frac{1}{0.5 s}=2 Hz$

Answer 2

F = 1/t
F = 1/0.5
F = 2Hz

Answer is 2Hz