University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Chapter 22, Problem 22.16E
Some planetary scientists have suggested that the planet Mars has an electric field somewhat similar to that of the earth, producing a net electric flux of −3.63 × 10l6 N · m2/C at the planet’s surface. Calculate: (a) the total electric charge on the planet; (b) the electric field at the planet’s surface (refer to the astronomical data inside the back cover); (c) the charge density on Mars, assuming all the charge is uniformly distributed over the planet’s surface.
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A planet has an electric field pointing toward its centre and having an average magnitude of about 1.2 × 10^2 N/C at its surface. (a) What is the sign of the charge on the planet? (b) What is the charge on the planet, assuming that all the charge is concentrated at the centre? This assumption is valid for a spherically symmetric object with a surface charge. The radius of the planet is 3.24 × 10^6 m.
The charge density of a non-uniformly charged sphere of radius 1.0 m is given as:
For rs1.0 m; p(r)= 2po(1-2 r/3)
For r>1.0 m; p(r)= 0,
where r is in meters.
What is the value of r in meters for which the electric field is maximum?
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0.50
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A uniform electric field, with a magnitude of 4 N/C, points in the positive x direction. When a charge is placed at the origin, the resulting electric field on the x axis at x = 2 m becomes zero. With the charge still at the origin, what is the magnitude of the electric field at x = +4 m?
Chapter 22 Solutions
University Physics (14th Edition)
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