Bats can navigate using the earths fielda plus for an animalthat may f...

Bats can navigate using the earthâ€™s fieldâ€”a plus for an animal that may fly great distances...

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Physics

Bats can navigate using the earthâ€™s fieldâ€”a plus for an animalthat may fly great distances from its roost at night. If, whilesleeping during the day, bats are exposed to a field of a similarmagnitude but different direction than the earthâ€™s field, they aremore likely to lose their way during their next lengthy nightflight. Suppose you are a researcher doing such an experiment in alocation where the earthâ€™s field is 52 ÂµT at a 60Â° angle belowhorizontal. You make a 50-cm-diameter, 100-turn coil around aroosting box; the sleeping bats are at the center of the coil.
a) Draw a diagram of the field and compute the magnitude of thehorizontal and vertical components. The horizontal component pointsnorth.
b) If you add a horizontal field that is double the earthâ€™shorizontal field but that points south, what is the new horizontalcomponent?
c) Describe the magnitude and direction of the total field. Howmight you expect this to affect the batâ€™s navigation?
d) What current do you need in the coil to produce the notedfield? What is the necessary orientation of the axis of thecoil?

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3.7 Ratings (435 Votes)

aThe horizontal component whic points north isThe vertical component which points downward isb We add horizontal component of 52 micro Telsa that pointstowards South If we See Answer

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