The drawing shows a type of fl ow meter that can be used
Chapter , Problem 4(choose chapter or problem)
The drawing shows a type of fl ow meter that can be used to measure the speed of blood in situations when a blood vessel is suffi ciently exposed (e.g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it fl ows perpendicularly with respect to a magnetic fi eld, as in the drawing, electrodes can be used to measure the small voltage that develops across the vessel. Suppose that the speed of the blood is 0.30 m/s and the diameter of the vessel is 5.6 mm. In a 0.60-T magnetic fi eld what is the magnitude of the voltage that is measured with the electrodes in the drawing?
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