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mylen [45]
3 years ago
10

The intensity of a 70-dB whistle is quintupled. What is the new decibel level

Physics
1 answer:
hoa [83]3 years ago
7 0

Multiplying the power of any signal by 5 can be described as
an increase of  6.99 dB .

If the whistle blew at 70 dB initially, and its sound power became
multiplied by 5, and the whistle and the listener both stayed in
the same places, then the listener would tell you that the whistle
was now blowing at 76.99 dB .

(More likely, he would report "77 dB" as he held his ears and winced.)

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Identify the law, write the equation and calculate the answer to the problem below.
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Find refractive index first

\\ \rm\Rrightarrow \mu=\dfrac{c}{v}

\\ \rm\Rrightarrow \mu=\dfrac{1.0003}{1.33}

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Now

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Which of the following is true regarding the properties of light?
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<h3>What is Light?</h3>

This refers to the electromagnetic radiation found in the electromagnetic spectrum that is perceived by the human eye and has a dual nature. It doesn't require a medium for its propagation unlike sound.

The dual nature of light is as a result of it behaving like a photon which is why it travels in straight lines.

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Read more about Light here brainly.com/question/1363382

#SPJ1

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