In Section 22.3 we claimed that a charged object exerts a net attractive force on an electric
Question:
a. Write an expression for the net force exerted on the dipole by charge +Q.
b. Is this force toward +Q or away from +Q? Explain.
c. Use the binomial approximation (1 + x)-n 1 - nx if x << 1 to show that your expression from part a can be written Fnet = 2KqQs/r3.
d. How can an electric force have an inverse-cube dependence?
Doesnt Coulombs law say that the electric force depends on the inverse square of the distance? Explain.
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Related Book For
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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