A hot-air balloon stays aloft because hot air at atmosphericpressure is less dense than cooler air at the same pressure. If thevolume of the balloon is 500.0 m3 and the surrounding air is at 15.0°C,what must the temperature of the air in the balloon be for it to lift a totalload of 290 kg (in addition to the mass of the hot air)? The density of airat 15.0C and atmospheric pressure is 1.23 kg/m3.

A hot-air balloon stays aloft because hot air at atmosphericpressure is less dense than cooler air at the same pressure. If thevolume of the balloon is 500.0 m3 and the surrounding air is at 15.0°C,what must the temperature of the air in the balloon be for it to lift a totalload of 290 kg (in addition to the mass of the hot air)? The density of airat 15.0C and atmospheric pressure is 1.23 kg/m3.

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