Problem 24.53 ien rien Constants Bats are capable of navigating using the earth\

Question

Problem 24.53 ien rien Constants Bats are capable of navigating using the earth's Correct n field-a plus for an animal that may fly great co Wh, during the day, bats are exposed to a field of a distances from its roost at night. If, while sleeping similar magnitude but different direction than the earth's field, they are more likely to lose their way during their next lengthy night flight Suppose you are a researcher doing such an experiment in a location where the earth's field is 50 T at a 600 Part B What is the necessary current? nsw angle below horizontal. You make a 100 cm Express your answer to two significant figures and include the appropriate units diameter, 50-turn coil around a roosting box, the sleeping bats are at the center of the coil. You wish dy(N to pass a current through the coil to produce a field that, when combined with the earth's field, creates a net field with the same strength and dip angle (60 1-alue Units nagneti below horizontal) as the earth's field but with a eter in horizontal component that points south rather than ber of t rmiability north Submit Incorrect, Try Again: 23 attempts remaining d it on ma years ag Return to Assignment Provide Feedback ere to search

Explanation / Answer

I = B * d / (N * mu0)

= (50 * 10-6 * 100 * 10-2) / (50 * 4 pi * 10-7)

necessary current = 0.796 A

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