in a resonance tube experiment using a closed tube the smallest value of l for which a peak in sound intensity occurs in 9 cm how much the tube must be raised to hear the next peak in intensity ignore the end correction​

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?