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1. What is the first law of thermodynamics? (1 point)
2. What is the second law of thermodynamics? (1 point)
3. A system must have boundaries. What is the region outside the system called? (1 point)
4. In a closed system, energy is interchanged while mass stays constant. What happens to energy and mass in an open system? (1 point)
5. Define a steady state flow system. (1 point)
6. Define intensive properties of a system. (1 point)
7. What 4 things are included in intensive properties? (4 points)
8. Explain what happens when a process occurs. (1 point)
9. Name at least 3 forms of internal energy (3 points)
10. When work is being done by a system, is heat flowing into or out of the system? (1 point)
11. What is the process called where there is little or no temperature change? (1 point)
12. Define vapor (1 point)
13. Do gases expand or contract when cooled? (1 point)
14. What is the value of absolute pressure at sea level? (1 point)
15. The volume of a 100 cu ft air tank at 45 psig is put in a 30 cu ft air tank. What is the gauge pressure in the 30 cu ft air tank? (4 points)
16. If 8 cu ft of air are under 100 psig compressed to 2 cu ft, what will the new gauge pressure be? (4 points)
17. A 3 cu ft balloon is filled with air at 90 deg F. How many cu ft will that same balloon contain one hour after it is taken into an air conditioned room at 70 deg F? (4 points)
18. A tank is holding 150 psig of air on a 70 deg F day. What is the gauge pressure on a 20 deg day? (4 points)
19. Define a vacuum as it relates to atmospheric pressure. (1 point)
20. What is the lowest possible absolute pressure? (1 point)
21. Define thermal energy. (1 point)
22. Define conduction as it relates to thermal energy. (1 point)
23. Which is a better conductor, aluminum or copper? (1 point)
24. Why are liquids better conductors than gases? (1 point)
25. Explain how convective heat is transferred. (1 point)
26. Convective heat transfer is possible through: (1 point)
a….