What is the energy of a photon of green light whose frequency is 6.85 x 1014/sec? i would be very if i can receive the answer fast

Frequency of photon = is 6.85 X 10¹⁴ sec⁻¹

Energy of photon , E = hv

where h is Planck's constant, v is the frequency of photon

E = 6.63 × 10⁻³⁴ J.s x 6.85 X 10¹⁴ s⁻¹

E = 4.54 x 10⁻¹⁹ J

Therefore, the energy of a photon of green light is 4.54 x 10⁻¹⁹ J.

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d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.