The difference between a nuclear reactor and an atomic bomb is that
[A]no chain reaction takes place in nuclear reactor, while in the atomic bomb there is a chain reaction
[B]the chain reaction in nuclear reactor is controlled
[C]the chain reaction in nuclear reactor is not controlled
[D]no chain reaction takes place in atomic bomb while it takes place in nuclear reactor

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

My husband of 22 years dumped me and our two daughters for a lady he met on dating app, i was so confused, I didn’t know what to do at that moment, I
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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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