Physics
On which principle does the hydraulic lift works?

Pascal's law
Newton's law
Joule's law
Archimedes's law

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Physics
We always see the same face of the moon, because

It revolves on its axis in adirection opposite to that ofthe earth
It takes equal time for revolution around the earth and rotation on its own axis
It rotates at the same speed as the earth around the sun
It is smaller than the earth

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