If we travel around the earth, we would find that the earths magnetic field a. Is the

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If we travel around the earth, we would find that the earth’s magnetic field
a. Is the same in direction and strength
b. Is the same in direction but not in strength
c. Is the same in strength but not in direction
d. Varies in both direction and strength

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The Physical Universe

ISBN: 978-0077862619

16th edition

Authors: Konrad B Krauskopf, Arthur Beiser

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