Calculate the frequencies of each of the wavelengths below and write the answers

Question

Calculate the frequencies of each of the wavelengths below and write the answers in scientific notation. Make sure to check your units!

Show all your calculations and write your final answer on the lines provided (6 points each) (a) 2.0 cm: Frequency = ___________ Energy:_______Region of Spectrum::_______

(b) 520 nm: Frequency = ___________ Energy:________ Region of Spectrum:_______

(c) 42 ?m: Frequency = ___________ Energy:_______Region of Spectrum::_______

(d) 75 nm: Frequency = ___________ Energy:_______Region of Spectrum::_______

Explanation / Answer

f = 3 * 10^8/2 * 10^-2 = 1.5 * 10^10 Hz E = 6.625 * 10^-34 * 1.50*10^10 = 9.9375 * 10^-24 J f = 3* 10^8/520 * 10^-9 = 5.77 * 10^14 Hz E = 6.625 * 10^-34 * 5.77*10^14 = 3.822 * 10^-19 J f = 3 * 10^8/42*10^-6 = 7.1 * 10^12 Hz E = 6.625 * 10^-34 * 7.1 * 10^12 = 4.703×10^-21 J f = 3 * 10^8/75*10^-9 = 4 * 10^16 Hz E = 6.625 * 10^-34 * 4*10^16 = 26.5 * 10^-18 J

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