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3 votes
Why does a weather balloon filled with Helium rise? (Refer to "Densities of Common Substances" table.)

a) Its density is greater than air.
b) Its density is less than air.

2 Answers

6 votes
because B density is less than air.
User Gautam Parmar
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6 votes
b density is less than air
User Mukesh Gupta
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