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A copper wire has radius r = 0.424 cm, is 6.00 m long, has resistivity ? = 1.72·10-8 ? m, and carries a current of 0.227 A. The wire has density of charge carriers of 8.50·1028 electrons/m3.
a) What is the resistance, R, of the wire?
b) What is the electric potential difference, ?V, across the wire?
c) What is the electric field, E, in the wire?
A driver in a car travelling at the speed of 78 km/h sees a cat km away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 99 m.
Define the carrier power, total power and sideband power in the AM signal.
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The label on a 12.0-V truck battery states that it is rated at 219.0 A·h (ampere-hours), How much electric energy can the battery supply and How much charge in coulombs can be pumped by the battery
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A small piece of dust (mass=1.8 \(\mu\)\ g) travels horizontally through an electric air cleaner in which the electric field is 524 N/C. What is the charge on the dust particle
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Let be the magnitude of the kinetic energy of puck A at the instant it reaches the finish line. Likewise, is the magnitude of the kinetic energy of puck B at the (possibly different) instant it reaches the finish line.
Evaluate the heat loss per meter for each of the combinations you can figure out. Summarize the result in a graphical way, such as a table, such that they are easy to read and understand.
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