Applying Coulomb's Law: Changes in Charge and Distance

AI Thread Summary
The discussion focuses on applying Coulomb's Law to analyze the effects of changes in charge and distance on the force between two charged spheres. When both charges are doubled, the force increases by a factor of four, as force is proportional to the product of the charges. Touching an uncharged identical sphere to one of the charged spheres results in the uncharged sphere acquiring a charge, leading to a new force when separated. Increasing the distance to 30.0 cm reduces the force according to the inverse square law, specifically to one-fourth of the original force. Understanding and applying Coulomb's Law is essential for solving these problems effectively.
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1. 1. Two charged spheres,10.0cm apart,attract each other with a force of magnitude 3.0 x 10^-6 N. What force results from each of the following changes, con- sidered separately?
(a) Both charges are doubled, while the distance remains the same.
(b) An uncharged,identical sphere istouched to one of the spheres and is then taken far away.
(c) The separation is increased to 30.0 cm.
 
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Hi webiret!
Welcome to PF.

The rule here at PF is, to get some help you must show attempt.

Can you write the equation for Coulumb's Law?
 
If you know Coulomb's Law, then all of the questions should seem pretty straightforward. Simple change the variables in the equation for Coulomb's Law and you should get the answers. Try it out, and if you get stuck, post your attempts here.
 

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