The energy of a photon that has a frequency of 18.21 × 1015 s- 1 is _ _ J.
A) 3.49 × 10- 48
B) 1.99 × 10- 25
C) 5.44 × 10- 18
D) 1.21 × 10- 17
E) 5.44 × 10- 18.
Correct Answer:
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