физика 300-350

What processes are used in the Clément-Desormes method to determine the ratio of the heat capacities of gases?

• Isochoric and isobaric.

• Isochoric and isothermal.

• Isobaric and adiabatic

• Isobaric and isothermal

• Isochoric and adiabatic.

Indicate the formulation of the first law of thermodynamics.

• The amount of heat transferred to the system is used to perform work against external forces and change the internal energy of the system.

• A perpetual motion machine of the second kind is impossible.

• Irreversible processes in closed systems occur with increasing entropy.

• In a closed Carnot cycle, processes occur at constant entropy.

• The process of spontaneous transfer of heat from a cold body to a hot one is impossible.

Indicate the statement of the second law of thermodynamics.

• A perpetual motion machine of the first kind is impossible.

• In a closed Carnot cycle, processes occur at constant entropy.

• When work is done on the system, heat transfer from a cold body to a hot one is possible.

• In open systems, entropy can either increase or decrease

• A perpetual motion machine of the second kind is impossible.

Specify the definition of a reversible process.

• A process in which a system, after going through a series of states, returns to its original state.

• The process occurs in both forward and reverse directions without changes in the environment.

• A closed cycle flowing clockwise when depicted on the diagram.

• Any nonequilibrium process.

• >Process at constant temperature.

What work is done by 1 mole of an ideal gas when heated by 1 K at constant volume?

• 8.31 J/mol•K

• 1.38*10^-23 J/K

• Depends on volume changes.

• Depends on heat capacity.

• No work is done.

Which part of the Carnot cycle describes an adiabatic process?

• 1 and 2

• 3

• 1 and 3

• 1

• 2 and 4

What is the work done by the gas during the transition from state 1 to 2 (P-V diagram)?

• 600 J

• 100 J

• 200 J

• 400 J

• 0 J

Which part of the Carnot cycle describes an isothermal process?

• 2

• 2 and 4

• 4

• 1 and 3

• 4 and 3

Give a formula expressing the first law of thermodynamics.

• Q=nA

• Q=cm^t

• Q=IUt

• Q=cU

• Q=^U+A

During isothermal expansion, an ideal gas does work A=20 J. How much will the internal energy of the gas change?

• 0 J

• 10 J

• 20 J

• 15 J

• 5 J