Question

A certain green light has a wavelength of 540 nm (5.4 x 10^-7 m) and travels at 3.0 x 10^8 m/s. What is its frequency?

Answer 1

You need to use the wave equation, \[v = f \lambda \] (velocity, frequency, wavelength (in metres)). Are you ok to rearrange the formula, etc?

Answer 2

can u rearange it? then i'll solve it my self

Answer 3

It is really important to learn how to rearrange equations! this one can be done using the triangle trick. But truly: divide both sides by lambda (the greek symbol for wavelength). That way it cancels itself on the right hand side, and leaves frequency. on the left, you get velocity / wavelength. Tell me your answer, i'll confirm it for you

Answer 4

ok