A high voltage transmission line of diameter 2 cm and length 2 km carries a steady current of 1000 A. If the conductor is copper with a free charge density of 8 1028 electrons/m3, how long does it take one electron to travel the full length of the cable? (e = 1.6 10-19 C)
a. 8 102 s
c. 8 106 s
b. 8 108 s
d. 8 104 s
Question 2
The total kinetic energy of a baseball thrown with a spinning motion is a function of:
a. its linear speed but not rotational speed. c. both its linear and rotational speeds.
b. its rotational speed but not linear speed. d. neither its linear nor rotational speed.
Cyanobacteria of the (a) genus Synechococcus form (b) mats that line hot springs around the world.
Messenger RNA (mRNA) carries genetic information from the nucleus to the cytoplasm for protein synth
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Operation of a typical pulse generator (pickup coil). At the bottom is a line drawing of a typical ...
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An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ...