Two particles have a mass of 6.8 kg and 11.0 kg , respectively.

If they are 800 mm apart, determine the force of gravity acting between them.
Express your answer to three significant figures and include the appropriate units.

I have 7.79 * 10^-15 N as my answer but it keeps saying its wrong.

What am I doing wrong...?

edit
nvm figured it out.

This post was edited by desertwolf on Aug 30 2015 10:45pm