The line joining the origin and the point represented by the complex number z = 1 + i is rotated through an angle 3p/2 in anticlockwise direction about the origin and stretched by additional unit. In the new position, the point is represented by the complex number

(A) – – i

(B) – i

(C) 2 – i

(D) none of these

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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