A 60W light bulb is used 12 hours a day and is 30% efficient. How many kJ are used to power this bulb in 30 days? How many kWh are actually used to create light (not heat) if the bulb were used for a full year?

A 60W light bulb is used 12 hours a day and is 30% efficient. How many kJ are used to power this bulb in 30 days? How many kWh are actually used to create light (not heat) if the bulb were used for a full year?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 69P: A large household air conditioner may consume 15.0 kW of power. What Is the cost of operating this...

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otal of 5 years?
2.
A 60W light bulb is used 12 hours a day and is 30% efficient.
How many kJ are used to power this bulb in 30 days?
How many kWh are actually used to create light (not heat) if the bulb were used for a full year?
ranacity of 3.5 megawatts (MW or MJ/sec). The turbine costs $1
art for electricity in the area

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