Mathematics, 10.08.2021 19:40 loveniasummer71
Hot air is less dense than cool air, so hot air will rise above cool air. Increasing the air
temperature inside a hot air balloon makes it lighter than the surrounding air, so the
balloon can lift up. The density of hot air is about 0.25 kg per cubic meter less than
that of cool air, which means a cubic meter of hot air can lift about 0.25 kg. What is
the minimum volume of hot air (in cubic meters) needed to lift a hot air balloon,
which weighs 375 kg and is carrying 3 people who weigh at least 68 kilograms each?
Enter the number only.
Answers: 1
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Jim is painting the inside of a circular helicopter pad. how many cans of paint would he need if the pad is 50 feet across and each can of paint covers about 200 ft2.
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What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3
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Hot air is less dense than cool air, so hot air will rise above cool air. Increasing the air
temper...
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