A standard flashlight battery can deliver about 4.9 W-h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 8.8 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour? (a) Number i (b) Number i Units Units

A standard flashlight battery can deliver about 4.9 W-h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 8.8 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour? (a) Number i (b) Number i Units Units

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 62P: A 0.50-W, 220- resistor carries the maximumcurrent possible without damaging the resistor. If the...

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