A thick rope of rubber of density 1.5 x 103 kg/m3 and Young's modulus 5 x 106 N/m2, 8m in length, when hung from ceiling of a room, the increase in length due to its own weight is A. 9.6 x 10- 3m B. 19.2 x 10-5m C. 9.6cm D. 9.6mm

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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