3 years ago

When electricity is produced from coal, the chemical energy in coal iS changed to energy.

Physics

1 answer:

WINSTONCH [101]3 years ago

6 0

Answer:

love

Explanation:

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PART A)

L = 97.4 dB

PART B)

$I = 6.11 \times 10^{-6} W/m^2$

PART C)

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Explanation:

PART A)

level of sound is given as

$L = 10 Log\frac{I}{I_o}$

now we have

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PART B)

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so here the intensity of sound is inversely depends on the square of the distance from the source

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$I_2 = 6.11 \times 10^{-6} W/m^2$

PART C)

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now we have

$L = 10 Log\frac{6.11\times 10^{-6}}{10^{-12}}$

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