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प्रश्न
Which one of the following requires wind energy?
पर्याय
Bicycle
Photosynthesis
Parachute
Automobiles
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उत्तर
Parachute
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संबंधित प्रश्न
Write true or false of the following statement.
A gum bottle lying on a table has no energy.
Fill in the blank
An electric fan converts electrical energy into ______ energy.
Fill in the blank
The S.I.unit of energy is ______
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 |
Define the term efficiency of a machine.
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
The capacity that an object has for doing work is called ______.
Find out the form of energy possessed by the following thing.
A rock on the top of a hill
Which one of the following is not the unit of energy?
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g = 10 m s–2)
