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Korvikt [17]
4 years ago
8

If you pump air into cycle tyre a slight warming effect is noticed at valve stem why

Chemistry
1 answer:
Mashutka [201]4 years ago
6 0

As the air molecules move through the valve they have friction as they hit the walls, and its this friction that causes it to heat up.

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Answer:

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Step-by-step explanation:

Let's do this in steps.

1. Convert grams to pounds

D = (1.26 g/1 cm³) × (1 lb/454 g)

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2. Convert cubic centimetres to cubic feet

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   = 78.6 lb/ft³

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