Determine the work done by a friction force, Physics

Assignment Help:

The work done by a friction force is:

a) Always positive

b) Always negative

c) Always zero

d) Either positive or negative depending upon the situation.

Ans: The work done by a friction force is always negative.


Related Discussions:- Determine the work done by a friction force

Measure the percentage change in its resistance, A cylindrical metallic wir...

A cylindrical metallic wire is stretched to enhance its length by 5%. Measure the percentage change in its resistance.

Define q- factor, Q. Define: Q- factor. The Q factor of a series reson...

Q. Define: Q- factor. The Q factor of a series resonant circuit is described as the ratio of the voltage across a coil or capacitor to the applied voltage. That is Q = voltag

Determine dielectric constant of vacuum, Dielectric constant of vacuum is ...

Dielectric constant of vacuum is (A) Infinity. (B) 100. (C) One. (D) Zero. Ans: Dielectric constant of vacuum is one.

Explain huygens eye piece, Explain Huygens eye piece with the help of a cle...

Explain Huygens eye piece with the help of a clean sketch. Illustrate its advantages and disadvantages. What are impure and pure spectra. State the conditions to produce a pure

State fraunhoffer''s lines, The central part (photosphere) of the sun is ve...

The central part (photosphere) of the sun is very hot and  all possible wavelengths of the visible light. Though, the outer part (chromospheres) having of vapours of dissimilar com

Factors affecting capacitance, Factors affecting capacitance: The facto...

Factors affecting capacitance: The factors which affect the capacitance of a parallel-plate capacitor are: Overlapping area of the plates (A). The capacitance increases

Determine the view factor, Consider a horizontal cylinder with diameter D a...

Consider a horizontal cylinder with diameter D and length L. The center of the cylinder is a distance a above the ground. A wall with length W and height H is located to the side o

State joules law of heating, Q State Joule's law of heating? The heat p...

Q State Joule's law of heating? The heat produced in a conductor is (i) Unswervingly proportional to the square of the current for a given R (ii) Unswervingly proportiona

Chemistry in action - detergents, chemistry in action - Detergents A re...

chemistry in action - Detergents A result of high dissolving power, the logically happening water all time consists of dissolved matters, majorly ionic substances. Hard water h

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd