Given (a + d) > (b + c) where a, b, c, d are real numbers, then A. a, b, c, d are in A.P. B. 1/a, 1/b, 1/c, 1/d are in A.P. C. (a + b), (b + c), (c + d), (a + d) are in A.P. D. 1/(a + b), 1/(b + c), 1/(c + d), 1/(a + d) are in A.P.

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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