State 'law of machines'?
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What is the role of transformer in a rectifier?
How will it be possible to kindle fire, if we had no matches ?
When a person whirls a rock on the end of a string and maintains it in uniform circular motion, the force exerted on the rock is most accurately referred to as?
Which way do twin screw props on a boat rotate when propelling the boat forward?
how does a medicine is filled in dropper
What is Sextent ?
what is the importance of frequency?
What is the commercial unit of electric power
How can you estimate the height of a bridge by dropping a stone from it ?
Please define e.s.u. it is the unit of ...... It is equal to .....
A burn from steam is more painful than that from boiling water. Why ?
Describe the Infra-red and Ultra-voilet rays?