Explain what is free fall acceleration?
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Define Penumbra ?
Why is ice wrapped in gunny bags ?
When a toy balloon is filled with air and then the air is allowed to go out, why dies the balloon whiz away ?
Consider earth's equator is covered with a measuring tape touching the ground such both the ends touch each other. if the tape is lifted 1 meter from the ground, what would be the distance between two ends of tape?
Why is it easier to lift a stone in water than in air ?
Tell me what is pascal s principle?
I have energy of (220V*1A=)220W. I want to convert it into (12V*15A=)180W. Is this possible? If yes, then how?
What is the effeciency of solar cell (Current year)
Why us the height of mercury column unaffected by the difference in the value of gravity at the same place?
Define Young’s modulus?
Explain the law of machines?
Explain the difference between free electron theory and band theory of solids?