For a particle confined to an infinite square well, is it correct to say that each state of definite energy is also a state of definite wavelength? is it also a state of definite momentum? explain. (hint: remember that momentum is a vector.)

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?