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The free surface of a liquid always has a tendency to contract and possess minimum surface area. If we want to enhance the surface area of the liquid, work has to be done. This work done is saved in the surface film of the liquid as its potential energy.
The potential energy per unit area of the surface film is known as the surface energy.
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NEWTON'S FIRST LAW AND INERTIA: All the material bodies possess the property of opposing any alter in the state of rest or uniform motion when some external force is applies up
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