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 systemneccesarily 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..

Radhika Batra , 10 Years ago

Grade 11