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Physics problems: electricity

conservation of charge: positive and

 

negative charges

 

Problem 1.

Two small spheres spaced 35.0cm apart   have equal charge.  How many excess electrons must be present on each sphere if the  magnitude of the force of repulsion between them is ?

Solution

 

Problem 41.

A conducting sphere has a net charge of charge. What is the approximate number of excess electrons on the sphere?

Solution

 

 

 

 

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