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jdmarquardt
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Homework Statement
Two charges Qa = 3 µC and Qb = -2 µC are placed on the x-axis with a separation of a = 25 cm.
(a) Find the net electric field at point P, a distance d = 7 cm to the left of charge Qa.
(b) Find the force on Qb due to Qa .
The charges Qa and Qb are now attached to the ends of a spring whose unstretched length is s0 = 25 cm. With the charges attached, the spring compresses to an equilibrium length s1 = 10 cm.
(c) Calculate the spring constant ks of the spring.
Homework Equations
E=F/q