Answered: A student keeps his 9.0 V, 5.3 W radio… | bartleby

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A student keeps his 9.0 V, 5.3 W radio turned on at full volume
from 8:00 p.m. until 4:00 a.m. How much charge went through it?
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A physics student has a single-occupancy dorm room. The student has a small refrigerator that runs with a current 2 A, a lamp that contains a 100-W bulb, an overhead light with a 60-W bulb, and various other small devices adding up to 7 W. All the appliances run on a voltage of 110 V. Overall Hint a. What is the total power used by the dorm room (while the refrigerator runs)? Total power used by the dorm room is b. Assuming that the power plant for the electricity is 16 km away and uses 000-gauge copper wire (diameter 10.405 mm), how much power is dissipated in transmission (remember to count the return wire), if the power plant is directly providing the 110-V? (To be more precise, the power plant is providing the voltage it needs to provide, so that the voltage at the dorm room is 110 V.) Hint for part (b) Power of W is dissipated in transmission at 110 V. c. The most common way to increase the efficiency of power transmission is by using higher voltage for long-distance transmission…
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