Recent content by rf1

Homework Statement Hi! I have this question "how is the curve of U(internal energy) with volume if the temperature is negative"?Homework EquationsThe Attempt at a Solution i cnsidered T=(partial U/partial S) at constant V and N (number of particules, but now i can't say the change of U with V...

I can't calculate acceleration of block 1 because it is in an accelerated frame and so the second law of Newton is not valid I tried to use Energy-Work Theorem but i can't because i don't have enough information to use it

Homework Statement A block of mass m=2kg and one of mass M=8kg have initial velocity zero. The friction coeffecient between m and M blocks is 0.3 Between block M and the surfasse there is no friction. L=3 metres F is a force constant and horizontal with magnitude 10 N, applied on block m and so...