📝 Multiple Choice Question
General-science
A balloon filled with helium rises in the air because:
A
air exerts an upward force on the balloon
B
the density of helium is less than the density of air
C
helium is a noble gas
D
the weight of the balloon is less than the buoyant force
Explanation
According to Archimedes' principle, an object rises when the upward buoyant force (weight of displaced air) is greater than its own weight.
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