Question

A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s.

The energy of the photon, to the nearest tenths place, is
× 10–50 J

Answer 1

E = hf = (6.63×10^-34 J·s)(7.3×10^-17 Hz) = 4.8399×10^-50 J ≈ 4.8 × 10^-50 J.