# physics

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Find the temperature at which the velocity of sound in air is 1.25 times the velocity of sound at 0 degree centigrade.

• physics -

v = 331 m/s • sqrt (1 + T/273)
1.25•331 =331• sqrt (1 + T/273)
1+T/273 = 1.25²=1.56
T/273 = 1.56-1=0.56,
T=273•0.56 =153ºC

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