53.+ A straight wire is aligned east-west in a region where Earth's magnetic field has magnitude 0.48 mT and direction 72° below the horizontal, with the hori- zontal component directed due north. The wire carries a current I toward the west. The magnetic force on the wire per unit length of wire has magnitude 0.020 N/m. (a) What is the direction of the magnetic force on the wire? (b) What is the current I?

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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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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53. + A straight wire is aligned east-west in a region
where Earth's magnetic field has magnitude 0.48 mT
and direction 72° below the horizontal, with the hori-
zontal component directed due north. The wire carries
a current I toward the west. The magnetic force on the
wire per unit length of wire has magnitude 0.020 N/m.
(a) What is the direction of the magnetic force on the
wire? (b) What is the current I?
Transcribed Image Text:53. + A straight wire is aligned east-west in a region where Earth's magnetic field has magnitude 0.48 mT and direction 72° below the horizontal, with the hori- zontal component directed due north. The wire carries a current I toward the west. The magnetic force on the wire per unit length of wire has magnitude 0.020 N/m. (a) What is the direction of the magnetic force on the wire? (b) What is the current I?
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