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spayn [35]
3 years ago
15

What is the energy of a 9 kg brick that is

Physics
1 answer:
Tems11 [23]3 years ago
6 0

Explanation:

formula for energy is k. e = ½mv²

m= 9

v= 75

k. e = ½×9×75 =337•5

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What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?
ivann1987 [24]

Answer:

2.46\cdot 10^5 J

Explanation:

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where

h is the Planck constant

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For the photon in this problem,

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So, its energy is

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One mole of photons contains a number of photons equal to Avogadro number:

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So, the total energy of one mole of photons is

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