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nataly862011 [7]
2 years ago
12

The noise from a power mower was measured at 104 dB. The noise level at a rock concert was measured at 121 dB. Find the ratio of

the intensity of the rock music to that of the power mower.
Physics
1 answer:
UkoKoshka [18]2 years ago
8 0

Based on the calculations, the ratio of the intensity of Ir to Ip is equal to 50.12.

<h3>How to find the ratio of the intensity?</h3>
  • Let the intensity of the power mower be Ip.
  • Let the intensity of the rock music be Ir.

Mathematically, sound intensity level can be calculated by using this formula:

\beta = 10 log(\frac{I}{I_{ref}} )

<u>Where:</u>

I is the intensity of the sound.

Making I the subject of formula, we have:

I = Io × 10^{\frac{\beta }{10} }

For Ip, we have:

Ip = Io × 10^{\frac{104 }{10} }

Ip = Io × 10^{10.4}

For Ir, we have:

Ir = Io × 10^{\frac{121 }{10} }

Ir = Io × 10^{12.1}

Now, we can find the ratio of the intensity:

Ir/Ip = Io × 10^{12.1}/Io × 10^{10.4}

Ir/Ip = 10^{12.1}/10^{10.4}

Ir/Ip = 10^{12.1 -10.4}

Ir/Ip = 10^{1.7}

Ir/Ip = 50.12.

Read more on sound intensity here: brainly.com/question/17062836

#SPJ1

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