A straight wire carries a 12-A current eastward and a second straight wire carries a 14-A current westward. The wires are separated by a distance of 42 cm. The force on a 6.4 m length of one of the wires is
A)
8.0 × 10-7 N.
B)
5.1 × 10-4 N.
C)
8.0 × 10-5 N.
D)
5.1 × 10-6 N.
E)
not possible to determine with the information given.
B
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An intercooler of an air compressor is to use a finned flat tube heat exchanger as shown in Figure 9-29. Compressed air at 100 psia, 130ºF passes through the tubes at 100 ft/s and air at 14.7 psia, 70ºF, and 100 ft/s passes around the tubes. Determine the convective heat transfer coefficient, the friction factor for the cooling air outside the tubes, and the overall convective heat transfer coefficient for the intercooler. Assume the inside dimensions of the flattened tubes are 0.105 in by 0.865 in.
Differentiate the S-, C- and M-type asteroids
What will be an ideal response?
Nebular theory predicts that other solar systems that formed in the same way should also have 8 planets
Indicate whether the statement is true or false
Helium condenses into the liquid phase at approximately 4 K. What temperature, in degrees Fahrenheit, does this correspond to?
A. ?182 B. ?269 C. ?118 D. ?452 E. ?484