1. A scalloped hammerhead shark swims at a steady speed of 1.3 m/s with its 84 c
ID: 1401448 • Letter: 1
Question
1. A scalloped hammerhead shark swims at a steady speed of 1.3 m/s with its 84 cm -cm-wide head perpendicular to the earth's 54 T magnetic field.
What is the magnitude of the emf induced between the two sides of the shark's head?
Express your answer using two significant figures.
2. In the rainy season, the Amazon flows fast and runs deep. In one location, the river is 22 m deep and moves at a speed of 3.5 m/s toward the east. The earth's 50 T magnetic field is parallel to the ground and directed northward.
If the bottom of the river is at 0 V, what is the potential (magnitude and sign) at the surface?
Express your answer to two significant figures and include the appropriate units.
V surface=
Explanation / Answer
induced emf
EMF = LvB
= (0.84)(1.3)(54x10^-6)
= 5.89x10^-5 V
= 5.8 x 10^-2 mV
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