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1)wen we rub our hands they bcum warm.have we supplied heat to the hands? 2)shud internal energy of a system neccesarily increase if heat is added 2 it? 3)the final vol. of a system is equal to the initial vol.in a ceatain process.is the wrk done by the system neccesarily zero?is it neccesarily non-zero? 4)can wrk be done by the system without changing its volume? PLZZ EXPLAIN EACH WITH EXAMPLES........ rates assured ......for each explanation..


1)wen we rub our hands they bcum warm.have we supplied heat to the hands?
 
2)shud internal energy of a system neccesarily increase if heat is added 2 it?
 
3)the final vol. of a system is equal to the initial vol.in a ceatain process.is the wrk done by the system neccesarily zero?is it neccesarily non-zero?
4)can wrk be done by the system without changing its volume?
 
PLZZ EXPLAIN EACH WITH EXAMPLES........
rates assured ......for each explanation..


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