Need help in physics sound and frequency problems
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Need help in physics sound and frequency problems

[From: ] [author: ] [Date: 11-12-27] [Hit: ]
-The speed of sound at 30ºC in dry air is 20.05*√[30*273] = 349 m/s.The distance is then 6*349 = 2.The period is 1/f = 4*10^-7 sec^-1The wavelength is the distance traveled in one period = 1520*4*19^-7 = 0.00061 m = 0.The speed of sound at 20 ºC and 1 atm is 343.......
Six seconds after a lightning flash was seen, thunder was heard. How far was the lightning if the temperature was 30ᵒC?

Dolphins emit very short sound waves with a frequency of 2510^5 cycles per second. What is their wavelength in water? (Assume that the velocity of sound in seawater is 1520 m/s)

What is the speed of sound at 20ᵒ and normal atmospheric pressure?

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The speed of sound at 30ºC in dry air is 20.05*√[30*273] = 349 m/s. The distance is then 6*349 = 2.1 km

The period is 1/f = 4*10^-7 sec^-1 The wavelength is the distance traveled in one period = 1520*4*19^-7 = 0.00061 m = 0.61 mm

The speed of sound at 20 ºC and 1 atm is 343.2 m/s
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