## Question

The speed of sound in hydrogen at STP is *v*. What is the speed of sound in helium at STP?

### Solution

The density of helium at STP = 2 times the density of hydrogen at STP. Since , the speed of sound in helium will be .

#### SIMILAR QUESTIONS

What is the maximum possible sound level in *dB* of sound waves in air? Given that density of air = 1.3 kg/m^{3}, *v* = 332 m/s and atmospheric pressure

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(b) How much more intense is an 80 dB sound than a 20 dB whisper?

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Decibel is:

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