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Q: What is a sign that work is being done?
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How do you determine a work done is positive sign or negative sign?

If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.


How do you know work is being done?

work is being done when you use energy


Is work done if you push a car that has run out of gas?

Yes. The work is being done by whoever is pushing rather then the engine, but work is being done. Any time a force is applied through a distance, work is being done.


If an object is being pushed but does not move is there any work being done on the object?

No, work is only done on an object when there is displacement in the direction of the force applied. If the object does not move, then no work is being done on it.


Why didn't Michelangelo sign his work?

In those days artists did not sign their work as it was done for the glory of God, to sign it would have been seen as an act of sinful vanity.


How Describe a situation in which work id done in object.?

An example of work being done on an object is when a painter paints a canvas. The canvas is the object on which the work of painting is being done. The action of applying paint to the canvas is the work being performed on the object.


How does a book work?

work can only be done by a living being


What does Lab work means?

It is work that is being done in a laboratory.


When you do laundry is work being done?

Yes it is.


Why work done on the system is negativeand it is positive when its done by the system?

First, there are certain sign conventions. It could be defined in a different way, but things are traditionally done in a certain way. Second, if work going out of the system is defined as positive, then it is quite logical that work going into a system should have the opposite sign.


How do you know when work is being done?

you know when work is done when it's finished and checked and approved by someone.


Is work being done when someone is typing a letter?

Yes it is being done, if the person doing it is doing it as part of a paid job or because they run a business and the letter is needed for the business. If it is being typed for school it may also be considered work, but of a different kind. And from the view of physics, since energy is being expended by the person typing, and perhaps by the machinery being used, work is being done. However, if you are at work and typing a letter to your grandmother, that is not the kind of work you are being paid for and your employer would say work is not being done.