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(a) Compute the electrical energy used by a household whose monthly electrical bill is $40, computed at the rate of $0.05 per kWh.   (b) How long could this energy be used to burn ten 100 W light bulbs?   (c) If this energy were used to raise a car of mass 2100 kg, to what height would the car be raised?

(a) Compute the electrical energy used by a household whose monthly electrical bill is $40, computed at the rate of $0.05 per kWh.   (b) How long could this energy be used to burn ten 100 W light bulbs?   (c) If this energy were used to raise a car of mass 2100 kg, to what height would the car be raised?

University Physics Volume 1
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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(a) Compute the electrical energy used by a household whose monthly electrical bill is $40, computed at the rate of $0.05 per kWh.
 

(b) How long could this energy be used to burn ten 100 W light bulbs?
 

(c) If this energy were used to raise a car of mass 2100 kg, to what height would the car be raised?

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