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(a) the power input to a ball if its kinetic energy increases from 11 J to 35 J in a time of 0.86 s (b) the electrical energy (in joules) used by a 100 W light bulb that is turned on for 65.0 min x10 to the power of kilowatt-hours) consumed (c) the electrical energy (in by a 1.10 kW hairdryer that is used for 5.7 min kW-h

(a) the power input to a ball if its kinetic energy increases from 11 J to 35 J in a time of 0.86 s (b) the electrical energy (in joules) used by a 100 W light bulb that is turned on for 65.0 min x10 to the power of kilowatt-hours) consumed (c) the electrical energy (in by a 1.10 kW hairdryer that is used for 5.7 min kW-h

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 17CQ: Most electrical appliances are rated in watts. Does this rating depend on how long the appliance is...
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Determine (a) the power input to a ball if its kinetic energy increases from 11 J to 35 J in a time of 0.86 s (b) the electrical energy (in joules) used by a 100 W light bulb that is turned on for 65.0 min x10 to the power of J kilowatt-hours) consumed (c) the electrical energy (in by a 1.10 kW hairdryer that is used for 5.7 min kW-h (d) the power input (in kilowatts) to a woman of mass 66 kg standing in an elevator that lifts her through a vertical distance of 15 m in 2.4 s (without increasing Submit her speed) kW
Transcribed Image Text:Determine (a) the power input to a ball if its kinetic energy increases from 11 J to 35 J in a time of 0.86 s (b) the electrical energy (in joules) used by a 100 W light bulb that is turned on for 65.0 min x10 to the power of J kilowatt-hours) consumed (c) the electrical energy (in by a 1.10 kW hairdryer that is used for 5.7 min kW-h (d) the power input (in kilowatts) to a woman of mass 66 kg standing in an elevator that lifts her through a vertical distance of 15 m in 2.4 s (without increasing Submit her speed) kW
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