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Several 60W incandescent light bulbs are wired in one circuit protected with a 15A breaker. The voltage of the household power is 115 V.
1. What is the resistance of the filament in the light bulb?
2. What is the maximum number of light bulbs can be connected to the circuit?
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The radius of a typical human eardrum is about 4.0 mm. Find the energy per second received by an eardrum when it listens to sound that is at the threshold of hearing. Find the energy per second received by an eardrum when it listens to sound that is..
Saturated water vapor at 2800C is isothermally condensed to a saturated liquid in a piston-cylinder system. Calculate the heat transfer
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 730-kg helicopter rises from rest to a speed of 8.8 m/s in a time of 3.9 s. Through this time it climbs t..
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a small object is 10 cm to the left of a converging lens f 5 cm and a second diverging lens f -3.3 cm is 5.8 cm to
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