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Two parallel plates, each of area 6.12 cm2, are separated by 5.40 mm. The space among the plates is filled with air. A voltage of 4.75 V is applied among the plates.
1. Compute the magnitude of the electric field between the plates
2. Compute the amount of the electric charge stored on each plate.
3. Now distilled water is placed among the plates and the capacitor is charged up again to the same voltage as before. Compute the magnitude of charge stored on each plate in this case. (Use = 82.0 for the dielectric constant of water.)
Two tugboats pull a disabled super tanker. Each tug exerts a constant force of 1.20×106 \rm N, one at an angle 19.0^\circ west of north, and the other at an angle 19.0^\circ east of north, as they pull the tanker a distance 0.670 \rm km toward the no..
An RLC circuit has a resistance of 300 ohms and an inductance of 20 mH. its oscillation frequency is 5000 Hz. At time t= 0 the current is 20 mA and there is no charge on the capacitor. what is the current after six complete cycles?
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