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Asked Dec 9, 2019
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What is the wavelength, in nanometers, of an electromagnetic wave that has a frequency of 6.0 × 10^4 HZ? (1nm=10^-9m)

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Step 1

The calculation of energy  as follows:

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E=hv here, planck's constant (h)=6.626×10* J.s frequency (v)=6.0×10ʻHZ E=(6.626x10*J.s)(6.0×10ʻHz) -34 %3D -34 = 3.97×10-®J

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Step 2

Then wavelength can be...

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E= hv =h- %3D hc_ (6.626x10* J.s)(3×10°m / s) 3.97×10-º J -34 = 5.00x10' m = 5.00x10' ×10° nm = 5.00x10"nm

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