How is the speed of a wave determined for this question?

enter image source here

1 Answer
David G.
May 12, 2016

The distance from peak to trough is #48# #cm=0.48# #m#, so a full wavelength, #lambda#, is twice this much, #0.96# #m#. The frequency is given as #2.4# #Hz#.

For a wave, #v=flambda=2.4xx0.96=2.304~~2.3# #ms^-1#.

Explanation:

The equation #v=flambda# connects the velocity in #ms^-1# with the wavelength, #lambda#, in #m# and the frequency in #Hz#.

#Hz# (hertz) is the unit of frequency, and is equivalent to #s^-1# in SI units.

This means the units are consistent on both sides.

Related questions
See all questions in Electricity from Magnetism
Impact of this question
1872 views around the world
You can reuse this answer
Creative Commons License