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Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter1: Introduction And Vectors

Section: Chapter Questions

Problem 15OQ

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Question

Earth's magnetic field near the ground is typically 0.50 G(0.50 gauss), where 1G=10^(−4) tesla. In temperate northern latitudes, this field is inclined downward at an angle of approximately 45∘. Consider the feasibility of using the earth's magnetic field to enable the levitation device shown in (Figure 1). Estimate the current needed to lift a copper bar with diameter d= 5.0 mmmm using the horizontal component of the earth's magnetic field. The density of copper is 8900 kg/m^3.

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