Aslan 251-300 Сесчия Физика котакская + 40-47 которые мне задали

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 reversed directions without changes in the environment.

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

• Any non-equilibrium process.

• Process at constant temperature.

What work is done by 1 mole of an ideal gas when heated by 1K 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

• 1 and 3

• 2 and 4

What is the work done by the gas during the transition from state 1 to 2:

• 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=ŋA

• Q=cm=∆t

• Q=IUt

• Q=cU

• Q=∆U+A

During isothermal expansion, an ideal gas does work. How much will the internal energy of the gas change:

• 0 J

• 10 J

• 20 J

• 15 J

• 5 J

Indicate the first law of thermodynamics for an isochoric process:

• ∆U=0

• Q=A

• A=-∆U

• Q=∆U

• Q=0

Which process diagram is shown in the figure:

• Adiabats

• Isobars

• Isochores

• Isotherms

• Polytropes

During the Carnot cycle, the working substance receives 300 kJ of heat from the heater. The heater temperature is 450K, and the refrigerator temperature is 270K. Determine the useful work per cycle:

• 90 kJ

• 120 kJ

• 180 kJ

• 240 kJ

• 300 kJ