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What is the energy of a purple lamp with a frequency of 7.5×10^14hz

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6 votes

Answer:

4.97x10^-19 Joules

Step-by-step explanation:

Energy and frequency are related by Planck's constant.

Energy = (Planck's Constant)*(Frequency)

Planck's constant = 6.626x10^-14 J/Hz

Energy = (6.626x10^-34 J/Hz)*(7.5x10^14 Hz)

Energy = 4.97x10^-19 J

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