Explications:
Bonsoir,
a) on FT/H = G * m * MT / d^2 donc d = √(G * m * MT / (FT/H))
b) d = √(6.67 * 10^-11 * 3500 * 5.97 * 10^24 / 770) = 42544041.35 m
c) la hauteur du satellite = 42544041.35 - 6380000 = 36164041.35 m
soit 36164.04 km = 3.6264 * 10^4 km