4. A North needle of a compass points toward the geographical North pole of the earth. Explain why thisdoesn't violate the "like poles repel" rule.5. What is the direction of the force in current carrying wire as shown in the figure.6. What is the difference between magnetic flux and magnetic field?7.Suppose you are holding a circular ring of wire in front of you and (a) suddenlythrust a magnet, south pole first, away from you toward the center of the circle.Is a current induced in the wire? (b) Is a current induced when the magnet isheld steady within the ring? (c) Is a current induced when you withdraw themagnet? Explain your answers.THProblem 5

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4. A North needle of a compass points toward the geographical North pole of the earth. Explain why this doesn't violate the "like poles repel" rule.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter29: Magnetic Fields

Section: Chapter Questions

Problem 29.12OQ

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.

Question

4. A North needle of a compass points toward the geographical North pole of the earth. Explain why this
doesn't violate the "like poles repel" rule.
5. What is the direction of the force in current carrying wire as shown in the figure.
6. What is the difference between magnetic flux and magnetic field?
7.
Suppose you are holding a circular ring of wire in front of you and (a) suddenly
thrust a magnet, south pole first, away from you toward the center of the circle.
Is a current induced in the wire? (b) Is a current induced when the magnet is
held steady within the ring? (c) Is a current induced when you withdraw the
magnet? Explain your answers.
TH
Problem 5

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