At what temperature the velocity of sound in air is 1.5 times the velocity at `7^(@)C` ?

What is the velocity of sound in air?

The temperature at which the velocity of sound in air will be 1.5 times its velocity at 0^@C is

At what temperature the velocity of sound will x double of the velocity at 10^@C ?

Find the temperature at which the velocity of sound in air will be 1 1/2 times the velocity at 11^@ C .

At what temperature will the velocity of sound in air be double than the velocity in air at 22^@C ?

Find the temperature at which the velocity of sound in air will be 1 1/2 times of the velocity at 27^@C .

At what tempreature will the velocity of sound in air be double the velocity of sound in air at 0^(@)C ?

The temperature coefficient of velocity of sound in air is