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3 years ago

What is the speed of a wave with a frequency of 2 Hz and a wavelength of 87 m?

Physics

2 answers:

7nadin3 [17]3 years ago

8 0

V = 174 m/s
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hope this helped</span>

vichka [17]3 years ago

4 0

Answer:

The speed of a wave with a frequency of 2 Hz and a wavelength of 87 m is <u>174 m/s</u>

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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:

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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

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