Electrical energy is usually measured in kilowatts*hours, kWh. A watt is 1 joule per second. A kilowatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh=3.6x10^6 joules. How many kWh are there in a meal that is 339 cal?

Electrical energy is usually measured in kilowatts*hours, kWh. A watt is 1 joule per second. A kilowatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh=3.6x10^6 joules. How many kWh are there in a meal that is 339 cal?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter4: Work And Energy

Section4.4: Power

Problem 2PQ: Electric bills from power companies charge for so many kilowatt-hours (kWh). What are we paying for?

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