What is the speed of a wave with a wavelength of 4 m and a frequency of 2 Hz?

Question

 What is the speed of a wave with a wavelength of

 4 m and a frequency of 2 Hz?

Answer 1

Hi Savannah W.,

Try to visualize a sinusoidal wave, 4 m long, passing you. If it were going 8 m s^-1, two cycles of it would have gone by in 1 s, right? (2 cycles = 8 m of it). So, it's going 8 m s^-1.

--Cheers, --Mr. d.