An amusement park owner designs a new test-your-strength machine. Contestants propel a metal bob up a smooth vertical slide by means of a hammer (see Figure below). To measure the initial speed they give to the bob, the owner decides to use the induction effect in the Earth's magnetic field B = 104 T: the bob completes a circuit with the sides of the slide, and a voltmeter measures the induced emf. If the bob is w= 10 cm wide, and contestants typically manage to make the bob rise to heights h=10 m, how sensitive must the voltmeter be? (Hint: Take note of the order of magnitude of the induced emf.) TEST YOUR 6

An amusement park owner designs a new test-your-strength machine. Contestants propel a metal bob up a smooth vertical slide by means of a hammer (see Figure below). To measure the initial speed they give to the bob, the owner decides to use the induction effect in the Earth's magnetic field B = 104 T: the bob completes a circuit with the sides of the slide, and a voltmeter measures the induced emf. If the bob is w= 10 cm wide, and contestants typically manage to make the bob rise to heights h=10 m, how sensitive must the voltmeter be? (Hint: Take note of the order of magnitude of the induced emf.) TEST YOUR 6

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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Question

4. An amusement park owner designs a new test-your-strength machine. Contestants propel a metal bob up a smooth
vertical slide by means of a hammer (see Figure below). To measure the initial speed they give to the bob, the owner
decides to use the induction effect in the Earth's magnetic field B = 104 T: the bob completes a circuit with the
sides of the slide, and a voltmeter measures the induced emf. If the bob is w= 10 cm wide, and contestants typically
manage to make the bob rise to heights h= 10 m, how sensitive must the voltmeter be? (Hint: Take note of the order
of magnitude of the induced emf.)
TEST
YOUR
STRENGTH

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