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katrin [286]
2 years ago
14

When air gets hot, it rises and forms…

Physics
1 answer:
NeTakaya2 years ago
5 0

Answer:

Gas

Explanation:

Hot air rises because gases expand as they heat up. When air heats up and expands, its density also decreases.

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If a pulley with six supporting ropes is used to lift a 1200 lb piano, what input force is needed?
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The correct answer is d) 200 lbs.

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3 years ago
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5 0
3 years ago
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Crazy boy [7]

Answer:

D. Exothermic, because energy is being absorbed from the surroundings

Explanation:

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8 0
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