An electromagnetic flowmeter is used to measure blood flow rates during surgery. Blood containing ions (primarily Na

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An electromagnetic flowmeter is used to measure blood flow rates during surgery. Blood containing ions (primarily Na+) flows through an artery with a diameter of 0.50 cm. The artery is in a magnetic field of 0.35 T and develops a Hall voltage of 0.60 mV across its diameter.

(a) What is the blood speed (in m/s)? 

(b) What is the flow rate (in m3/s)? 

(c) If the magnetic field points west and the blood flow is north, is the top or bottom of the artery at the higher potential?

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