Select the correct answer. G = 6.67 * 10-11 N·m2/kg2 Me = 5.598 * 1024 kg What is the velocity of an Earth satellite that is in a circular orbit with a radius of 7.5 * 107 meters measured from the center of the Earth?

A.

2.9 * 103 meters/second

B.

2.3 * 103 meters/second

C.

7.5 * 103 meters/second

D.

5.9 * 103 meters/second

Question

Physics

Chloe Warner

18 July, 19:29

Select the correct answer. G = 6.67 * 10-11 N·m2/kg2 Me = 5.598 * 1024 kg What is the velocity of an Earth satellite that is in a circular orbit with a radius of 7.5 * 107 meters measured from the center of the Earth?

A.

2.9 * 103 meters/second

B.

2.3 * 103 meters/second

C.

7.5 * 103 meters/second

D.

5.9 * 103 meters/second

+3

Answers (1)

Know the Answer?

Marcelo Murray · Answer 1

Centripetal force of satellite = gravitational force between earth and the satellite

(m•v^2) / r = (G•Me•m) / r^2

v^2 = (G•Me) / r

v^2 = 6.67x10^-11 x 5.598x10^24 / 7.5x10^7

v = 2231 m/s

so answer is B