3.A battery is used to charge a parallel plate capacitor till the potential differences between the plates become equal to the electromotive force of the battery.the ratio of the energy stored in the capacitor and the work done by the battery. a)1/4 b)1/2 c)1 d)2

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

 

 

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