CBSE Class 11-science Answered
PRESSURE AND TEMPERATURE
Asked by | 03 Mar, 2012, 03:01: PM
Expert Answer
When you pump up a cycle tyre with a hand pump, that the end of the pump gets hot because the energy that is put into the air by pumping it has not only compressed it, but has also caused the air molecules to push closer together so giving off heat with the friction.
Answered by | 09 Mar, 2012, 09:53: AM
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