Answer / santhosh kumar

1 kg of iron is heavier because the density of iron is more
than the density of cotton.

Answer / himanshu batra

1 kg of cotton is heavier this is becoz cotton displaced
more air den iron so upthrust force on cotton is more than
iron hence more quantity of cotton is required to balance
1kg den iron hence 1 kg of cotton is heavier den iron

Answer / ron

1 kg cotton!for the space of air within cotton!

Brief difference between lead screw & Ball screw.

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1 ton equal to

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what is the formula of entropy?

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