pling leaming In medicine, is often important to monitor the blood flow in certa

Question

pling leaming In medicine, is often important to monitor the blood flow in certain areas of the body. However, the movement of blood is difficult to monitor directly. Instead, some medical devices the taking advantage of the fact that the blood flowing through a vein contains a considerable amount of free ions. As a simplification, we consider the vein in a patient's arm to be of rectangular cross-section, as shown above with the width of the vein at w 4.00 mm and height mm. The entire section of the vein is immersed in a constant magnetic field of 0,0755 tesla pointing horizontally. The equipment (not shown) constantly monitors the Hall voltage. Suppose medical precautions mandate that the speed of the blood flow for this particular component of the body should never cm/s. At what minimum Hall voltage (in millivolts) should design the medical device to trigger an alarm to the medical staff? Number Incorrect. The magnetic field will separate the charges vertically, not horizontally. mv .068 Hypothetical o Previous 8 Give Up & View solution anTry Again Next Exit

Explanation / Answer

w =4 mm , h =3.35 mm, B =0.0755 T, vd =22.5 cm/s

VH = vd*h*B = (0.225*3.35*10^-3*0.0755)

VH = 0.0569 mV

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