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प्रश्न
Fill in the blank
Cooking gas converts _______ energy into heat energy.
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उत्तर
Cooking gas converts chemical energy into heat energy.
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संबंधित प्रश्न
Fill in the blank
The ability to do work is called ______
State two factors on which the potential energy of a body at a certain height above the ground depends.
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 |
What is energy?
Tick the most appropriate answer.
The force applied on a machine to do work is called the
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
Can you tell?
When can we say that displacement has taken place?
When a body falls freely towards the earth, then its total energy
Which one of the following is not the unit of energy?
The weight of a person on planet A is about half that on the earth. He can jump up to 0.4 m in height on the surface of the earth. How high he can jump on planet A?
