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Lerok [7]
3 years ago
9

What is the speed of sound in air when the temperature is 20°C?

Physics
2 answers:
Anarel [89]3 years ago
5 0
The answer to your question is 343 m/s
Minchanka [31]3 years ago
4 0

Answer:

The speed of sound in air when the temperature is 20°C is 343 m/s.

Explanation:

Given that,

Temperature T = 20°C = 20+273=293 K

The speed of sound in air is the distance traveled divided by time.

We know that,

The relation between the speed of sound in air and temperature is defined as:

v= 331\sqrt{\dfrac{T}{273}}

Where, T = temperature in Kelvin

v = speed of sound in air

We substitute the value into the formula

v = 331\sqrt{\dfrac{293}{273}}

v = 342.9 = 343\ m/s

The speed of sound in air is 331 m/s at 0° C, 343 m/s at 20°C and 346 m/s at 25°C.

Hence, the speed of sound in air when the temperature is 20°C is 343 m/s.

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