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zlopas [31]
3 years ago
9

Which wave a or b has lower energy

Physics
2 answers:
Nina [5.8K]3 years ago
8 0

Answer:

c

Explanation:

i took the test

bixtya [17]3 years ago
3 0

Answer:

Can u attach an image please

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When and where did the first nuclear reactor generate electricity
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5 0
3 years ago
Find the noise level of a sound having an intensity of 1.5x10^-14W/m^2 given I0=10^12 W/m2
Llana [10]

Answer:

Noise level will be -18.2 watt

So option (b) will be correct answer

Explanation:

We have given sound intensity I=1.5\times 10^{-14}w/m^2

And threshold intensity I_0=\times 10^{-12}w/m^2 ( in question it is given as 10^{12}w/m^2 but its standard value is 10^{-12}w/m^2 )

Now noise level  =10log\frac{I}{I_0}=10log\frac{1.5\times 10^{-14}}{10^{-12}}=10log0.015-18.23

So the noise level will be -18.2

So option (b) will be correct answer

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3 years ago
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ioda
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Hope i helped :)
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