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tatuchka [14]
3 years ago
11

If the speed of sound in air is 343 m/s, what is the shortest wavelength of sound that humans can hear?

Physics
2 answers:
vitfil [10]3 years ago
8 0
We know, Wavelength = speed / frequency

Highest frequency (normally that humans can hear) = 20 KHz
= 20,000 Hz  (for shortest wavelength)

Speed = 343 m/s

Substitute their values, 
wavelength = 343 / 20,000
w = 0.01715

In short, Your Answer would be: 0.01715 m

Hope this helps!
GuDViN [60]3 years ago
4 0
F = 1/T = 20,000 so T = 1/20,000 
<span>distance = speed * time </span>
<span>L = 343 T </span>
<span>L = 343/20,000 </span>
<span>L =. 01715 meters or about 1.7 centimeters</span>
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4 years ago
What do you mean by unit lb
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Replacing at the previous equation we have that

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Replacing our values we have

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Answer:

Explanation:

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mass of aluminium cup m_{al}=90\ gm

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specific heat of aluminium c_{al}=0.9\ J/g-K

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specific heat of water c_w=4.184\ J/g-K

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Heat gained by ice such that ice is melted and reached a temperature of 18^{\circ}C

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Comparing 1 and 2 we get

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Answer:

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