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प्रश्न
Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?
उत्तर
Submarines are provided with ballast tanks. When required to dive, the water is allowed to enter the tanks. And when required to sail, the water is forced out by compressed air.
Work is a scalar quantity.
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संबंधित प्रश्न
When do we say that work is done?
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