Which on of the following would a hydrogen balloon find easiest to lift?
A
1 kg of steel
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B
1 kg of water
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C
1 kg of lightly packed feathers
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D
all the same
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Solution
The correct option is C 1 kg of lightly packed feathers A hydrogen baloon can easily lift a pack of feathers as they have very less density which result in large volume for 1Kg, easy to be lift.