A carbon resistor is made of a cylinder of carbon, of length 1.5 cm. If the resistivity of carbon is 3.5 
and when placed in a circuit a potential difference of 0.15 V exists when 12 A flows across the resistor, what is the radius of the cylinder?
A. 6.5 mm
B. 12 mm
C. 3.7 mm
D. 1.2 mm
C. 3.7 mm
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An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is 2.00 cm in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is 200 kPa. The velocity of the fluid in the wide section is 4.00 m/s. The narrow section is located 2.00 m below the wide section. What is the diameter of the narrow section for the pressure of the fluid in the narrow section to equal the pressure in the wide section? (density of the fluid is 1,000 
A. 1.46 cm B. 1.20 cm C. 1.10 cm D. 0.90 cm E. 0.75 cm
Helium was first discovered in the
A) laboratory. B) upper atmosphere. C) Sun. D) island of Helios, in Greece. E) byproducts of nuclear fusion.
O3 and O2 are the two ______________ of the element oxygen
Fill in the blank(s) with correct word
A neutron?
A. A B. B C. C D. D E. zero F. Other G. AA H. BB I. CC J. DD