(4) Need to know the weight of the block to answer.(5) Need to know the coetficient of friction a, to answer.21. An olympic weight lifter lifts 100 kg by 1.3 m in 0.7 seconds. What is the average power (in watts) delivered by thelifter during the lift?(1) 1820(4) 686(2) 186(3) 1270(5) 980

Answered: (4) Need to know the weight of the…

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)...

See similar textbooks

Similar questions

11.) A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The friction force on the box is 75.0 N. During this process, what is the work done on the cabinet by the normal force, in Joule? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
A mechanic pushes a 3770 kg car from restto a speed of v, doing 4845 J of work in theprocess.Find the speed v. Neglect friction betweencar and road.Answer in units of m/s.
Al lift to raise a crate to height of 10.0 m is used. [1hp= 746 W] How much hp is necessary to raise the crate at 5.0 m/s?
11. A 5kg block is pushed up a 40° incline at constant velocity of 3m/s. The force pushing on the blockacts parallel to the incline, and has a magnitude of 47.5N. (a) What is the magnitude of the normal forceacting on the block? (b) What is the magnitude of the frictional force? (c) Calculate the coefficient offriction. (d) How much work is done by the normal force? (e) How much work is done by the force offriction after 4 seconds have elapsed? (f) What is the net work done on the block?
4. Calculate the power made by a 50-kg boy running up the stairs with a height of 3.00 m in 2.50 s.
4. A car crashes into a tree. What is the work done by the tree stopping the car? The car has a mass of 2075 kg and was traveling at 20.45 m/s. Include a negative if appropriate. Previous submissions:
3. Calculate the power expended when a 500 N barbell is lifted 2.2 m in 2s. 4. If 360 Joules of work are needed to move a crate a distance of 4 meters, what is the weight of the crate?
Don't use chatgpt will upvote and provide solution in Handwritten form neat and clean and please be quick as soon.
. You use 40 J of energy to rise a 250 N object. How far high did you lift it?
'1. A 40KG box initially at rest is pushed for 5.0m along a rough horizontal floor by a constant horizontally applied force of 130 N. If the coefficient of frietion between the box and the floor is 0.30, find; a) the work done by the applied force, b) the energy lost due to friction, c) the change in kinetic energy of the box, d) the final speed of the box.
A 65.0-kg file cabinet of is sliding down a rough ramp for a distance of 5.00 m as shown. The friction force on the box is 75.0 N. During this process, what is the net work done on the cabinet, in Joule? Use g = 10.0 m/s2.
5. A 1000N block was pushed by a force P of 1500N up an incline upward to the right at a slope of 3 vertical to 4 horizontal in a distance of 2m. If the coefficient of kinetic friction between the block and the incline is 0.20. Determine the required work to increase the velocity of the block from 3 to 15 m/s? (.

Recommended textbooks for you

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Lecture- Tutorials for Introductory Astronomy

Physics

ISBN:

9780321820464

Author:

Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden

Publisher:

Addison-Wesley

College Physics: A Strategic Approach (4th Editio…

Physics

ISBN:

9780134609034

Author:

Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher:

PEARSON

SEE MORE TEXTBOOKS

(4) Need to know the weight of the block to answer. (5) Need to know the coetficient of friction a, to answer. 21. An olympic weight lifter lifts 100 kg by 1.3 m in 0.7 seconds. What is the average power (in watts) delivered by the lifter during the lift? (1) 1820 (4) 686 (2) 186 (3) 1270 (5) 980