A circuit is operated by a battery of internal resistance 0.2 ohm and emf 6 V. The current flowing in the circuit is 0.3 A. The power supplied to the rest of the circuit other than the internal resistance is a) 1.8 W b) 1.74 W c) 1.42 W d) 1.62 W

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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