A liquid is kept in a glass beaker. Which molecules of the liquid have the highest potential energy? (a) Molecules at the bottom of the beaker (b) Molecules near the centre of the liquid (c) Molecules lying at half the depth of the liquid and touching the walls of the beaker (d) Molecules lying in the surface film

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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