9. The rate of increase of bacteria in a certain culture is proportional to the number present.

If it double in 5 h, then in 25 h, its number would be :

1) 8 times the original

2) 16 times the original

3) 32 times the original

4) 64 times the original

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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