Three capacitors each of capacity 4 µF are to be connected in such a way that, the effective capacitance is 6 µF. This can be done by a) connecting all of them in series b) connecting them in parallel c) connecting two in series and one in parallel d) connecting two in parallel and one in series

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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