Here is a link to Desmos Here is another formula that we use…
Here is a link to Desmos Here is another formula that we used that is slightly different than the one in the formula sheet above If a vehicle is moving at mach 0.75 through air at standard pressure and 11 degrees Celsius, while emitting a siren with a frequency of 500Hz from the perspective of an observer that is stationary relative to the siren, solve for the frequency that would be heard from an observer that is a) in front of the vehicle b) behind the vehicle.