Thermodynamics Problems

In this assignment we will use metric units; here is a short summary of these units:

Force is measured in Newtons (N)

Volume is measured in cubic meters (m³)

Work and Energy are measured in Joules (J)

1 Joule = 1 Newton*meter

Entropy is measured in Joules per Kelvin (J/K)

Be sure to show all of your work.

1. What type of measuring device relies on Zeroth's Law and how does it do tis?
2. The temperature outside is 72 degrees Fahrenheit. What is the temperature in Kelvin?
3. An isolated system absorbs a heat transfer of 65J and performs 20 J of work. What is the internal energy of the system?
4. An isolated system contains some amount of internal energy. If 55 J of heat are transferred into the system, but the internal energy remains the same, how much work must be done by the system?
5. How much work is done by a jet engine that exerts 145 N of force over a distance of 1 km?
6. A gas maintains a constant pressure of 89 N/m² while being heated. The resulting change in volume is 0.24 m³. What is the work done by the gas?
7. The same gas in problem 6 had an internal energy of 60 J and a final volume of 2 m³. What is the enthalpy (H) of the gas?
8. The combustion process inside a jet engine creates 300 J of heat and does 120 J of work spinning a turbine shaft. What is the change in specific enthalpy of the gas?
9. Through an irreversible process, object A transfers 560 J of heat to object B. The resulting temperature of the system is 241 K. What is the entropy of the system?
10. For an ideal gas, if the pressure remains the same but the volume is doubled, what would you expect to happen to the temperature? Why? **Hint: use the equation of state to help justify your answer.