Answered: r= e0 dr Figure P29.47 8.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A wire carrying a current I is bent into the shape of an exponential spiral, r = e^θ, from θ = 0 to θ = 2π as suggested in the figure. To complete a loop, the ends of the spiral are connected by a straight wire along the x axis. (a) The angle β between a radial line and its tangent line at any point on a
curve r = f(θ) is related to the function by
tan β = (r)/(dr/dθ)
Use this fact to show that β = π/4. (b) Find the magnetic field at the origin.

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