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Alik [6]
3 years ago
14

HELP FAST PLZ!!!!

Chemistry
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

He had the most potential energy going down hill

Explanation:

because he picked up he went faster

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The frequency : a) 7.5 x 10¹⁴ /s

<h3>Further explanation</h3>

Radiation energy is absorbed by photons

The energy in one photon can be formulated as

\large{\boxed{\bold{E\:=\:h\:.\:f}}}

Where

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The wavelength(λ) of purple light is 400 x 10⁻⁹ m, so the frequency :

\tt f=\dfrac{c}{\lambda}\\\\f=\dfrac{3.10^8~m/s}{4.10^{-7}m}\\\\f=\boxed{\bold{7.5.10^{14}}/s}

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