From the user, an air temperature 
is given. Before calculating the speed of sound, the air temperature value must
be converted to Kelvin 
.
To convert the air temperature to Kelvin, see the link below:
tempConvert.php
Just a side note before calculating the speed of sound, the speed of sound
is dependent on the density of the air. The density of the air is dependent
on the temperature of the air.
Then, the speed of sound 
can
be calculated using the formula below:
