Water waves in the sea are observed to have a wavelength of 300 m and a frequency of 0.07 Hz.The speed of these waves is:
A)0.00023 m/s
B)2.1 m/s
C)21 m/s
D)4300 m/s
E)none of these

Question

Quizplus · Accepted Answer

The formula relating the speed, frequency, and wavelength of a wave is:
speed = frequency × wavelength
Plugging in the given values:
speed = 0.07 Hz × 300 m
speed = 21 m/s
Therefore, the speed of these waves is 21 m/s, which is answer choice C.

Water Waves in the Sea Are Observed to Have a Wavelength