x-rays produced in an x ray machine can have a frequency of 1.4*10^14 what is the wave length of these electromagnetic waves in nm?
wavelength = speed of light divided by frequency
Make sure you use the right units.
c = 3*10^8 m/s
Your frequency is in Hz (s^-1)
You will have to convert a wavelngth in meters to nanometers. I assume you know how to do that