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Gnom [1K]
3 years ago
8

Question 10 of 10

Physics
1 answer:
Margaret [11]3 years ago
7 0

Answer: D. 5.0(10)^{-38} J

Explanation:

The energy E of an electromagmetic wave is given by:

E=\frac{hc}{\lambda}

Where:

h=6.626(10)^{-34}J.s is the Planck constant

c=3(10)^{8} m/s is the speed of light in vacuum

Then hc=1.99 (10)^{-25}Jm

\lambda=4.0(10)^{12} m is the wavelength

Solving:

E=\frac{1.99 (10)^{-25}Jm}{4.0(10)^{12} m}

E=5.0(10)^{-38} J

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