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ikadub [295]
3 years ago
12

The speed of light in a vacuum is 2.998Ã108 m/s. calculate its speed in miles per hour (miles/h).

Physics
1 answer:
snow_tiger [21]3 years ago
7 0
670616629.3844 miles per hour
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Explain the different methods that can be used to model the motion of an object.
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Answer:

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Make a rough estimate of the number of quanta emitted in one second by a 100 W light bulb. Assume that the typical wavelength em
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Answer:

#_photon = 5 10²⁰ photons / s

Explanation:

For this exercise let's calculate the energy of a single quantum of energy, use Planck's law

         E = h f

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Let's calculate

          E₀ = 6.6310⁻³⁴ 3 10⁸/1000 10⁻⁹

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This is the energy emitted by a photon let's use a proportions rule to find the number emitted in P = 100 w

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               #_photon = 100 / 19.89 10⁻²⁰

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6 0
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Answer:

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