In an experiment to determine the Young’s modulus of the material of a wire, the length of the wire and the suspended mass are doubled. Then the Young’s modulus of the wire (a) Becomes double (b) Becomes four time (c) Remain unchanged(d) Becomes half

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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