1. A wire with a weight per unit length of 0.077 N/m is suspended directly above a second wire. The top wire carries a current of 29.8 A and the bottom wire carries a current of 59.2 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion.

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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1.  A wire with a weight per unit length of 0.077 N/m is suspended directly above a second wire. The top wire carries a current of 29.8 A and the bottom wire carries a current of 59.2 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion.

 ___________ mm

2. In the figure below, the current in the long, straight wire is 

I1 = 2.70 A, and the wire lies in the plane of the rectangular loop, which carries 13.8 A. The dimensions shown are c = 0.100 m, a = 0.150 m, and ℓ = 0.450 m. Find the magnitude and direction of the net force exerted by the magnetic field due to the straight wire on the loop.

magnitude _________

direction __________

 

Please help answer both!

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