Thermodynamics Worksheet

Thermodynamics WorksheetDirections: Write the answers to the following questions in the spaces provided. Whereappropriate, make complete statements.1. What is thermodynamics?2. What is internal energy?3. State the first law of thermodynamics.4. What is an adiabatic process?5. How does a heat pump differ from a heat source?6. What is an isothermal process?7. What is an ideal heat engine?8. What change in operating conditions increases the efficiency of an ideal heat engine?9. State the second law of thermodynamics.10.State the law of entropy.NNHS Advanced Physics!Thermodynamics

11.The mechanical equivalent of heat in the SI systemis .12.The first law of thermodynamics is a special case of thelaw of .13.When heat is converted to another form of energy, orvice versa, there is (great, some, no) loss of energy.14.In the Joule experiment, no heat enters or leaves theinsulating jar. The water-churning process is, therefore,a(n)one.15.Work done by a gas is considered positive when thegasand negative when thegas .16.When the volume of a gas increases isothermally, itspressureand itstemperature .17.During an isothermal expansion, the internalenergy .18.When the volume of a gas increases adiabatically, itspressureand itstemperature .19.During an adiabatic expansion, the internalenergy .20.The source of the heat equivalent of work done by anideal gas during isothermal expansion isits, while the source of the heat equivalentof work done by an ideal gas during adiabaticexpansion is its .21.Give an example of a heat pump: .22.Work can be found by finding thediagram.of a23.The second law of thermodynamics makes it impossibleto attain a temperature of .24.Entropy is the amount of energy that cannot beconverted into .25.Natural processes tend to increaseuniverse.in the1112131415a15b16a16b1718a18b1920a20b2122a22b232425NNHS Advanced Physics!Thermodynamics

26.What happens to V, P, and T in the following processes?Process V P TIsobaric expansionIsothermal compressionIsobaric compressionDuring which of the above processes is work done on the gas?During which of the above processes is work being done by the gas?27.A gas expands from a volume of 2.00 m 3 to 6.00 m 3 and does 6912 joules of work against aconstant outside pressure. Find the outside pressure.28.A Carnot engine operates between 20 °C and 500 °C. How much energy must be suppliedto produce 10000 J of work?29.Find the efficiency of an ideal heat engine operating between temperatures of -100 °C and500 °C.30.How much would the efficiency of an ideal heat engine be improved if its lower temperaturewere changed from 80.0 °C to 40.0 °C while the upper temperature remained at 300 °C?NNHS Advanced Physics!Thermodynamics