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With the piston pump to a bicycle when the cylinder wall will be hot

cs980982010-01-31 15:01:02 +0000 #1

zclai2010-01-31 15:08:01 +0000 #2
ah you this a problem? If it is so junior high school physics question you can answer:

1, the piston of the cylinder wall friction and heat

2, the piston doing work on the air pump, the gas internal energy increase in temperature.

Supplementary questions to answer:

These two points are correct, but which the primary and secondary problems. The "two, piston doing work for the air pump, the gas internal energy increase in temperature." Play a major role, probably accounting for over 90% of heat!
None of the one enemy2010-01-31 15:12:11 +0000 #3
friction

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