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A car travels with a constant speed of 15 m/s. The car's engine produces a 4000N pushing force in order to keep the speed constant. How much power is developed by the engine? A. 60 W B. 600 W C. 6000 W D. 60000 W E. 600000W

A car travels with a constant speed of 15 m/s. The car's engine produces a 4000N pushing force in order to keep the speed constant. How much power is developed by the engine? A. 60 W B. 600 W C. 6000 W D. 60000 W E. 600000W

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A machine does 2500 J of work in 1 min. What is the power developed by the machine? A. 21 W B. 42 W C. 150 W D. 2500 W E. 150000 W A car travels with a constant speed of 15 m/s. The car's engine produces a 4000 N pushing force in order to keep the speed constant. How much power is developed by the engine? A. 60 W B. 600 W C. 6000 W D. 60000 W E. 60000ow A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m/s. What is the pushing force? A. 3000 N B. 30000 N C. 300000 N D. 300 N E. 30 N A block with a mass of m crosses a rough horizontal surface at a constant speed of v. The coefficient of kinetic friction between the block and the surface is u. How much power must be produced in order to overcome the friction force? A. mg B. umg C. zero D. ug E. umgv
Transcribed Image Text:A machine does 2500 J of work in 1 min. What is the power developed by the machine? A. 21 W B. 42 W C. 150 W D. 2500 W E. 150000 W A car travels with a constant speed of 15 m/s. The car's engine produces a 4000 N pushing force in order to keep the speed constant. How much power is developed by the engine? A. 60 W B. 600 W C. 6000 W D. 60000 W E. 60000ow A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m/s. What is the pushing force? A. 3000 N B. 30000 N C. 300000 N D. 300 N E. 30 N A block with a mass of m crosses a rough horizontal surface at a constant speed of v. The coefficient of kinetic friction between the block and the surface is u. How much power must be produced in order to overcome the friction force? A. mg B. umg C. zero D. ug E. umgv
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