Let f : ? be such that f is injective and f(x)f(y) = f(x +y) for all x, y ? . If f(x), f(y), f(z) are in G.P., then x, y, z are in (A) A.P. always (B) G.P. always (C) A.P. depending on the values of x, y, z (D) G.P. depending on the values of x, y, z

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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