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प्रश्न
Write true or false of the following statement.
Potential energy changes into kinetic energy when it is put to use
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
Match the following columns
| COLUMN A | COLUMN B |
| 1. Running water | 1. heat energy |
| 2. Burning | 2. vibrations |
| 3.Energy | 3.atom bomb |
| 4.Sound energy | 4.kinetic energy |
| 5.Nuclear energy | 5.joule |
What is potential energy ? State its unit.
Match the following:
| Column A | Column B |
| (a) Needle | (1) class II lever |
| (b) Doorknob | (2) inclined plane |
| (c) Ramp | (3) Class I lever |
| (d) Lemon crusher | (4) Wheel and axle |
| (e) Seesaw | (5) wedge |
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What do you understand by the term efficiency of a machine’?
Name the quantity whose unit is :
(a) kilowatt
(b) kilowatt-hour
Derive the relation between commercial unit of energy (kWh) and SI unit of energy (joule).
We make useful objects from a variety of substances. Another use of substances is that we get energy from some of them.
There is a car. Its tank is full of fuel but it does not move. Why is that?
Running water possesses ______.
Which one of the following requires wind energy?
When a body falls freely towards the earth, then its total energy
