A weather forecasting plastic balloon of volume 15 m3 contains hydrogen of density0.09kg m3 . The volume of equipment carried by the balloon is negligible compared to its own volume . The mass of the empty balloon is 7.15kg the balloonis floating
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The total mass of the balloon with the Hydrogen gas in it
= 15 m^3 * 0.09 kg/m^3 + 7.15 kg
= 8.50 kg
As the balloon is floating : air density > 8.50 kg/15 m^2 = 0.507 kg/m^3
= 15 m^3 * 0.09 kg/m^3 + 7.15 kg
= 8.50 kg
As the balloon is floating : air density > 8.50 kg/15 m^2 = 0.507 kg/m^3
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