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A light bulb has a resistance of 270. It is connected to a standard wall socket (120 V rms, 60.0 Hz).
1) Decide the rms current in the bulb.
2) Determine the rms current in the bulb after a 19.5 µF capacitor is added in series in the circuit.
3) It is possible to return the current in the bulb to the value computed in part (a) by adding an inductor in series by the bulb and the capacitor. What is the value of the inductance of this inductor?
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A coffee cup heater and a lamp are connected in parallel to the same 120-V outlet. Find the resistance of the lamp
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A pulsar is an extremely dense neutron star which is a highly magnetized. As it rotates it emits a beam of electromagnetic radiation which can sweep across the earth at very regular intervals. by what amount would the pulsar radius have had to shri..
Assume that while pecking on a tree the woodpecker's head comes to a stop from an initial velocity of 0.7 m/s over a distance of 0.003 m. Evaluate the magnitude of the corresponding deceleration in units of the acceleration due to gravity g. What is ..
Suppose 0.380 kg of water initially at 45.0°C is poured into a 0.300 kg glass beaker having a temperature of 25.0°C. Calculate the final equilibrium temperature of the system
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