CProblems: Magnetism Problem 24.53 PartA Constants Bats are capable of navigatin
ID: 1866160 • Letter: C
Question
CProblems: Magnetism Problem 24.53 PartA Constants Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, while sleeping during the day, bats are exposed to a field of a similar magnitude but different direction than the earth's Seld, 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 60 angle below horizontal. You make a 80 cm diameter, 50-tum coil around a roosting box; the sleeping bats are at the center of the coil. You wish to pass a current through the coil to produce a field that when combined with the earth's field, creates a net field wilth the same strength and dip angle (60 below horizontal) as the earth's field but with a horizontal component that points south rather than north What is the proper orientation of the coi? Axis of the coil is horizontal and directed south-north. O Axis of the coil is horizontal and directed east-west Axis ofthe coil is 600 below horizontal and directed south-north. Axis of the coil is 30 above horizontal and directed south-north. Previous Answers Correct Part B What is the necessary ourrent? Express your answer to two significant figures and include the appropriate units. IValue Units Submit Previous Answers Reauest AnswerExplanation / Answer
A)
The axis of the coil should be a) horizontal and directed south-north.
B)
I = (B*d)/(N*u0) = (50 x 10^-6 x 0.80)/(50 x 4pi x 10^-7)
I = 0.637 A
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