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Which of the following forces exists between objects even in the absence of direct physical contact?.

SAT

1 answer:

N76 [4]3 years ago

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Answer: Field Force

Explanation:

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The minimum number of photons of green light that can be detected by the human eye is 6.

Given that;

E = nhc/λ

E = energy of the photon = $2.35 * 10^-18$ J

n = number of photons = ?

h = Planks constant = $6.6 * 10^-34$ Js

c = speed of light = $3 * 10^8$ m/s

λ = $510 * 10^-9$ m

Making number of photons the subject of the formula;

n = $2.35 * 10^-18 * 510 * 10^-9 / 6.6 * 10^-34 * 3 * 10^8$

n = 6 photons

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Answer:

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