A copper cable needs to carry a current of 160 A with a power loss of only 2.0 W/m. What is the required radius of the copper cable? (The resistivity of copper is 1.7 × 10^?8 ??m)
a. 0.43 cm
b. 0.83 cm
c. 1.7 cm
d. 2.6 cm
e. 0.33 cm
b
You might also like to view...
In metallic bonding, the valence electrons are ______________electrons.
Fill in the blank(s) with the appropriate word(s).
A 5.00 kg ball is traveling at 4.0 m/s and strikes a wall. The ball bounces off the wall with a velocity of 4.0 m/s in the opposite direction. If the contact with the wall by the ball lasts for 0.10 seconds, then the magnitude of the impulse on the ball is
A. 24 kg m/s. B. 30 kg m/s. C. 36 kg m/s. D. 40 kg m/s. E. 50 kg m/s.
A deuterium nucleus and a tritium nucleus react to yield one alpha particle, a neutron, and energy. This is an example of a
A. fission reaction. B. chain reaction. C. fusion reaction. D. chemical reaction.
An object is placed 9.5 cm in front of a convex lens with a focal length of magnitude 24 cm
(a) Where is the image formed and how far is it from the lens? (b) What is the magnification produced by the lens? What will be an ideal response?