Posted by John on Friday, September 28, 2012 at 12:07pm.
Im trying to study for my physics exam by doing some extra problems, however im stuck with this one. any help is much appreciated
Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 4.62 x 106 kg. The gravitational force that each sphere exerts on the other is balanced by the electric force. Determine the charge magnitude.

physics  bobpursley, Friday, September 28, 2012 at 12:11pm
Well, from experience, the charge has to be small.
gravitational force: GM^2/r^2
electrical force: kQ^2/r^2
set them equal.
Q^2=GM^2/k = you do it, then take the square root to find Q
Answer This Question
Related Questions
 physics  trying to study but stuck with this one. Two tiny spheres have the ...
 physics  Two tiny spheres have the same mass and carry charges of the same ...
 Physics  (Someone please help me !! I don't understand this.) Two tiny ...
 physics  Two tiny conducting spheres are identical and carry charges of 18.1C ...
 physics 2  1) A spherical surface completely surrounds a collection of charges...
 Physics  im trying to study for my exam by doing problems, however im stuck ...
 Physics  Two small aluminum spheres, each having mass 2.65×10−2 , ...
 physics Electricity  Two tiny conducting spheres are identical and carry ...
 Physics  Two tiny conducting spheres are identical and carry charges of 19.8 ยต...
 Physics  1. The problem statement, all variables and given/known data A point ...
More Related Questions