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An electromagnetic flowmeter is used to meausre blood flow rates during surgery. Blood containing Na+ ions flows due south through an artery with a diamter of 0.40 cm. The artery is in a downward magnetic field of 0.25 T and develops a Hall voltage of 0.35 mV across its diameter.
a.) What is the bloos speed in m/s?
b.) What is the flow rate in m^3/s? c.) The leads of a voltmeter are attached to diametrically opposed points on the artery to measure the Hall voltage. Which of the two leads is at the higher potential?
Calculate the rotational inertia of a meter stick, with mass 0.64 kg, about an axis perpendicular to the stick and located at the 18 cm mark
Find out the average magnitude of the induced emf if the change in shape occurs in 4.24 {rm s} and the local 0.120-{rm T} magnetic field is perpendicular to the plane of the loop.
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
Electric charge Q has been spread uniformly over a circular arc of radius R and central angle 40 degrees. What is the potential at point P, center of curvature of the arc.
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. The moment of inertia of the plank about the pivot is .
you look over at a really expensive diamond fish bowl. the fish in the bowl is at an angle of 75 to the normal. what angle does light exit the fish bowl
You are driving north on 107th Avenue at a speed of 31.2 mph. At what frequency do you hear the siren
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
Indiana Jones crosses between two rock cliffs by slowly going hand over hand along a rope stretched between two cliffs. What is the smallest value the angle THETA can have
Two point charges 3.0cm apart have an electric potential energy -130?J, find the lesser and greater charge
You roughly estimate that the roommate shines light rays on to the water at an angle of 52.1°. You know that air has an index of refraction of 1.0. Determine the index of refraction of the unknown liquid
A brass plate with a thickness of 1.00 cm is placed over a copper plate with a thickness of 2.00 cm. What is the effective coefficient of thermal conductivity for the brass - copper layer
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