a piece of metal weighs 46 gramsin air when it isimmersed in a liquid of specificgravity 1.24 at 27 0c itweighs 30 grams. when temperature of liquid is raised to 42 0c themetal piece weighs 30.5grams with specific gravity 1.20 ,then linear expansion of metal is

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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