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bagirrra123 [75]
2 years ago
7

you can produce a sound by plucking a string or by blowing into a pipe. how are these two sounds different

Physics
1 answer:
Tamiku [17]2 years ago
5 0

Explanation:

both are different types of energy. one is elastic p.e while the other one is made by change in sound waves

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Find the electron and hole mobilities, and the resistivity of intrinsic silicon at 300K. Is intrinsic silicon a semiconductor
tino4ka555 [31]

Answer:

Resistivity = 231.481 K Ohm

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Explanation:

Solution:

At 300K:

Let suppose mobility of electron in intrinsic semiconductor = M_{e}

Mobility of electron in intrinsic semiconductor is:

M_{e}  = 1300 cm^{2}/volt.sec

Let suppose mobility of hole in intrinsic semiconductor = M_{h}

M_{h} = 500 cm^{2}/volt.sec

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And,

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e = 1.6 x 10^{-19} C

So, plugging in the values, we get:

σ = C x (M_{h} + M_{e}) e

σ = 1.5 x 10^{10} x (500 + 1300) x 1.6 x 10^{-19}

σ = 4.32 x 10^{-6}

So, now we can find the resistivity.

Resistivity = 1/σ

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Resistivity = 231.481 K Ohm

Yes, Intrinsic Silicon is the semiconductor.

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2 years ago
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