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FrozenT [24]
2 years ago
6

Ph11_UnitPacket2019

Physics
1 answer:
frozen [14]2 years ago
3 0

Let's see

Use snells law

\\ \rm\Rrightarrow \dfrac{n_1}{n_2}=\dfrac{sini}{sinr}

\\ \rm\Rrightarrow \mu=\dfrac{sin30}{sin19.9}

\\ \rm\Rrightarrow \mu=0.5/0.34

\\ \rm\Rrightarrow \mu=1.47

It may be glass

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Answer:

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Explanation:

using the law of the conservation of energy:

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Also, by laws of newton, N is calculated by:

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