The drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel is sufficiently exposed (e. g., during surgery). Blood is conductive enough that it can be treated as a moving conductor. When it flows perpendicularly with respect to a magnetic field, as in the drawing, electrodes can be used to measure the small voltage that develops across the vessel. Suppose the speed of the blood is 0.57 m/s and the diameter of the vessel is 5.4 mm. In a 0.73-T magnetic field what is the magnitude of the voltage that is measured with the electrodes in the drawing?

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Magnitude of Voltage = 2.21 x 10^(-3) V

Explanation:

From the question, The blood flowing at a speed v corresponds to the moving rod, and the diameter of the blood vessel corresponds to the length L of the rod in the figure. The magnitude of the magnetic

field is B, and the measured voltage is the emf (ξ) induced by the motion. Thus, we can apply;

ξ = BvL

Diameter L =5.4mm = 5.4 x 10^(-3)m

Thus;

ξ = 0.73 x 0.56 x 5.4 x 10^(-3) = 2.21 x 10^(-3) V

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

gas and liquid