A 0.79-m aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the bar hits the river below, its speed is 16 m/s, and the emf induced across its length is 5.9 × 10-4 V. Assuming the horizontal component of the Earth's magnetic field at the location of the bar points directly north, (a) determine the magnitude of the horizontal component of the Earth's magnetic field, and (b) state whether the east end or the west end of the bar is positive. (a) Number i (b) Units

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 0.79-m aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the bar hits
the river below, its speed is 16 m/s, and the emf induced across its length is 5.9 × 10-4 V. Assuming the horizontal component of the
Earth's magnetic field at the location of the bar points directly north, (a) determine the magnitude of the horizontal component of the
Earth's magnetic field, and (b) state whether the east end or the west end of the bar is positive.
(a) Number i
(b)
Units
Transcribed Image Text:A 0.79-m aluminum bar is held with its length parallel to the east-west direction and dropped from a bridge. Just before the bar hits the river below, its speed is 16 m/s, and the emf induced across its length is 5.9 × 10-4 V. Assuming the horizontal component of the Earth's magnetic field at the location of the bar points directly north, (a) determine the magnitude of the horizontal component of the Earth's magnetic field, and (b) state whether the east end or the west end of the bar is positive. (a) Number i (b) Units
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