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प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
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उत्तर
Yes.
संबंधित प्रश्न
Is work a scalar or a vector quantity?
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
A boy throws a rubber ball vertically upwards. What type of work, positive or negative, is done : by the force applied by the boy?
(a) by the force applied by the boy?
(b) by the gravitational force of earth?
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
Complete the following sentences:
Kilowatt is the unit of ....... and kWh is the unit of
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
Give an example
Chemical energy changes to electrical energy.
Name the material commonly used for the manufacturing of solar cells.
The work done by the heart is 1 Joule per beat. Calculate the power of the heart if it beats 72 times in one
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
