# Physics

posted by
**Emily** on
.

A satellite moves in a circular orbit around

the Earth at a speed of 5.4 km/s.

Determine the satellite’s altitude above

the surface of the Earth. Assume the

Earth is a homogeneous sphere of radius

6370 km and mass 5.98 × 10

24

kg. The

value of the universal gravitational constant

is 6.67259 × 10

−11

N · m2

/kg

2

.

Answer in units of km