Find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air.
To find the speed of sound in dry air at a specific temperature and pressure, we can use the following formula:
v = 331.4 + 0.6 * T
where:
v is the speed of sound in m/s,
T is the temperature in degrees Celsius.
In this case, the temperature is -35°C. We can plug this value into the formula:
v = 331.4 + 0.6 * (-35)
First, multiply -35 by 0.6:
v = 331.4 + (-21)
Next, add -21 to 331.4:
v = 310.4
Therefore, the speed of sound in dry air at -35°C and 1 atm pressure is approximately 310.4 m/s.