Escape Velocity (from surface of the Earth)

[Tyyoung]

Homework Statement

A satellite with a mass of 5.00x10^2 kg is in a circular orbit, whose radius is 2re, around Earth. Then it is moved to a circular orbit with a radius of 3re.

e) Calculate the escape velocity for the satellite if it is on Earths surface.

Homework Equations

Vesc = Sq.root of 2GMp/r

The Attempt at a Solution

Vesc = Sq.root of 2(6.67x10^-11)(5.98x10^24)/6.38x10^6

Vesc = Sq.root of 125036363.6
Vesc = 11182.966 m/s
Therefore the velocity of the satellite must be > 11182.966 m/s

I must of done something wrong because 11000m/s seems way to fast! Plz help.
Thanks in advance.

 

[rock.freak667]

I think that the escape velocity of the Earth in the km/s range. So that should be correct.

 

[housemartin]

Use google to check ;] your answer is correct