[填空题]
A space probe enters the thin atmospher18cfo zge;he c0 e,sr,e of a p 1xw, k-p,v(udqf-gidlanet where the speed of sound is only about 35 m/dguq --(1wd ,xk ipv,fs
(a) What is the probe’s Mach number if its initial speed is 15000 km/h$\approx$ (Round to the nearest integer)
(b) What is the angle of the shock wave relative to the direction of motion? $^{\circ} $
