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Consider electromagnetic waves propagating in air.
(a) Determine the frequency of a wave with a wavelength of (i) 5.0 km,
(ii) 5.0 mm, (iii) 5.0 nm. (b) What is the wavelength (in meters and
nanometers) of (i) gamma rays of frequency 6.50 * 10^21 Hz and (ii) an
AM station radio wave of frequency 590 kHz?

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