Calculate the wavelength of each frequency of electromagnetic radiation: 1050 khz (typical frequency for am radio broadcasting) (assume four significant figures)

C = Î"v

here

c is the speed of light in meters/second, a constant 3.00Ă-10^8

Î" is wavelength of the electromagnetic wave in meters (what we want)

v is the frequency in 1/s or hertz

so given v=1050 khz or 1050*10^3 hz

now

3.00Ă-10^8=Î" * 1050*10^3

Î"=3.00Ă-10^8/1050*10^3

Î"=285.5 m