An electromagnetic flow meter 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?