A hot-air balloon plus cargo has a mass of 312 kg and a volume of 2210 m3
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A hot-air balloon plus cargo has a mass of 312 kg and a volume of 2210 m3 on a day when the outside air density is 1.22 kg/m3. The balloon is floating at a constant height of 9.14 m above the ground. What is the density of the hot air in the balloon?
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