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प्रश्न
Give two examples of couple actions in our daily life.
Write one example of a couple.
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उत्तर
- Opening and closing the cap of a bottle
- Turning a key in a lock
संबंधित प्रश्न
State the energy transformation on the following:
Electricity is obtained from solar energy.
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 __________.
An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
If an electric bulb of 100 watt is lighted for 2 hours, how much electric energy would be consumed?
State the energy changes which take place when A toy car with a wound spring moves on ground.
A canon ball of mass 500g is fired with a speed of 15m/s-1. Find: its momentum.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
