Posted by **Anonymous** on Tuesday, December 8, 2009 at 11:57pm.

a.the gravitational force between 2 electrons 1.00m apart is 5.42x10^-71 N. Find the mass of an electron.

b.2 spherical balls are placed so their centres are 2.6m apart. The force between the balls is 2.75x10^-12N. What is the mass of each ball if one ball is twice the mass of the other ball?

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