Kara and Mike stretch a spring between them and send waves along it by oscillating one end. The time between wave crests is 0.5 seconds. What is the frequency?
The frequency of a wave is calculated as the reciprocal of the period, which is the time between wave crests.
In this case, the time between wave crests is 0.5 seconds, so the period is 0.5 seconds.
Therefore, the frequency is:
Frequency = 1 / Period
Frequency = 1 / 0.5
Frequency = 2 Hz
So, the frequency of the waves is 2 Hz.