True and False 10 pts 1 Work done by a system is positive

True and False (10 pts.)

_____ 1. Work done by a system is positive.

_____ 2. Work done to the surroundings is negative.

_____ 3. There is no heat transfer in a closed system.

_____ 4. There is no mass transfer in an isolated system.

_____ 5. Work can only be done when there is some form of heat transfer.

_____ 6. Power and heat flux share the same units.

_____ 7. Heat transfer is an intensive property.

_____ 8. Heat transfer is an extensive property.

_____ 9. No work can be done during an adiabatic process, since there is no heat transfer.

Solution

1.True..when ever work is done by the system it is positive

2.True...to always negative

3. False..energy will transfer..as heat is one form of energy it is false

4.True..there is no mass transfer and as well as energy transfer

5. True .when we supply some heat..then only work occurs

6.false...power units WATTS and flux units WATTS/M2

7.False..it is quantity..it is extensive

8.TRUE

9.False ..There is internal energy exits..not alwys