if a plane is flying at a speed so that the apex half-angle of its shock wave is 30 degrees, what is the speed if the speed of sound is 320 m/s?
physics - drwls, Friday, May 13, 2011 at 9:08pm
sin 30 = 1/M = 1/2
M = 2 = V/a (the Mach number)
v = 2 a
a is the sound speed