Answered: m Figure P22.31

Science

Physics

m Figure P22.31

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 10CQ: Solve that I I 2 /2 has units of energy.

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

A small block of mass m and charge Q is placed on an insulated, frictionless, inclined plane of angle θ as shown. An electric field is applied parallel to the incline. (a) Find an expression for the magnitude of the electric field that enables the block to remain at rest. (b) If m = 5.40 g, Q = -7.00 μC, and θ = 25.0°, determine the magnitude and the direction of the electric field that enables the block to remain at rest on the incline.

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