Find the kinetic energy k of a satellite with mass m in a circular orbit with radius r. express your answer in terms of m, m, g, and r.

Explanation:

The kinetic energy is defined as:

Here, m is the object's mass and v its speed. In this case the speed of the satellite is the orbital speed, which is given by:

Here, G is the gravitational constant, M is the mass of the object that the satellite is orbiting and R is the radius of its circular orbit. Replacing (2) in (1):

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2