13:31LTE lI.Classroom >A docs.google.comThe work is (mv^2 dv)/2.FalseTrueThe work is vector quantity.FalseTrueWhen the K-E constant, the work done zero.FalseTrueThe Newton 2nd law: F=m ds/dtFalseTrueIf there is no friction, the work3D0.TrueFalseO O

Name: 13:31LTE lI.Classroom >A docs.google.comThe work is (mv^2 dv)/2.False
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Description: 13:31LTE lI.Classroom >A docs.google.comThe work is (mv^2 dv)/2.FalseTrueThe work is vector quantity.FalseTrueWhen the K-E constant, the work done zero.FalseTrueThe Newton 2nd law: F=m ds/dtFalseTrueIf there is no friction, the work3D0.TrueFalseO O

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Physics

LTE lI. 13:31 Classroom A docs.google.com The work is (mv^2 dv)/2. O False O True The work is vector quantity. False O True When the K-E constant, the work done zero. False O True

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 42P: A particle moving in the xy -plane is subject to a force F(x,y)=(50Nm2)(xi+yj)( x 2 + y 2 )3/2 ,...

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The force acting on a panicle varies as shown in Figure la P7.14. Find the work done by the force on the particle as it moves (a) from x = 0 to x = 8.00 m. (b) from x = 8.00 m to x = 10.0 m, and (c) from x = 0 to x = 10.0 m.
A particle moving in the xy -plane is subject to a force F(x,y)=(50Nm2)(xi+yj)( x 2 + y 2 )3/2 , where x and y are in meters. Calculate the work done on the particle by this force, as it moves in a straight line from the point (3 in, 4 m) to the point (8 in, 6 in).
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The force acting on a particle varies as shown in Figure P6.14. Find the work done by the force on the particle as it moves (a) from x = 0 to x = 8.00 m, (b) from x = 8.00 m to x= 10.0 m, and (c) from x = 0 to x = 10.0 m.
Describe the energy transfers and transformations for a javelin, stating from the point at which an athlete picks up the javelin and ending when the javelin is stuck into the ground after being thrown.
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A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?