Chapter 1 - thermodynamics

2. / Complete the conversion factor: 32.2 ___ ft / (lbf s2)
4. / _________ properties depend on the size or mass of the system.
8. / The _______ prefix is often used to designate a process where a particular property remains constant.
10. / _________ Law of Thermodynamics expresses the conservation of energy principle.
11. / An object has a mass of twenty pounds. How much does it weigh on earth?
13. / __________ properties are independent of the size and mass of the system.
15. / A control _________ is an arbitrary region in space (chosen by the engineer) where mass (with its energy) and other forms of energy transfer (heat and work) can cross the boundary.
17. / specific _______ is a property that describes the amount of volume per unit mass of a material.
18. / ________ transfer is energy transfer (a type of arrow) that is driven by a temperature difference.

1. / A ________ system is one in which no mass crosses the boundary.
3. / A property that describes the amount of mass per unit of volume of a material.
5. / A ________ system does not change as a function of time.
6. / The _______ law of thermodynamics says that energy is conserved.
7. / One thing we think about energy is that it cannot be created or destroyed. It is ____________.
9. / A common name for SI (System Internationale). Units include kg, m, sec, K.
12. / The ________ law of thermodynamics is that energy tends to disperse. We write equations involving entropy (s) to model this law in a quantitative way.
14. / A common name for the USCS (United States Customary System). Units include lbm, ft, sec, and lbf. Converting from force to mass times acceleration can be a pain to new learners, but DWI.
16. / An _______ system is one in which mass and energy can cross the boundary.