Advertisements
Advertisements
प्रश्न
A gas in a closed container is heated with 10 J of energy, causing the lid of the container to rise 2m with 3N of force. What is the total change in energy of the system?
विकल्प
10J
4J
– 10J
– 4J
Advertisements
उत्तर
4J
Explanation:
Write the equation from the first law of thermodynamics.
ΔU = Q – W
Write the expression of work done.
W = F × Δx
W = (3N) × (2m)
W = 6J
Substitute 10J for Q and 6J for W to find a change in energy.
ΔU = 10J – 6J
ΔU = 4J
संबंधित प्रश्न
Give an example of some familiar process in which no heat is added to or removed from a system, but the temperature of the system changes.
A hypothetical thermodynamic cycle is shown in the figure. Calculate the work done in 25 cycles.
A group of objects that can form a unit which may have the ability to exchange energy with its surrounding is called what?
On what basis a thermodynamic system can be classified?
Classify and explain the thermodynamic system.
An ideal gas passes from one equilibrium state (P1, V1, T1, N) to another equilibrium state (2P1, 3V1, T2, N). Then
Identify the state variables given here?
What is a thermodynamic system? Give examples.
What are the different types of thermodynamic systems?
What is meant by ‘thermal equilibrium’?
What is mean by state variable? Give example.
What are intensive and extensive variables? Give examples.
Discuss the thermal equilibrium.
Discuss the mechanical equilibrium.
Discuss the chemical equilibrium.
Discuss the thermodynamic equilibrium.
If the piston of a container is pushed fast inward. Will the ideal gas equation be valid in the intermediate stage? If not, why?
Which of the following statements is correct for any thermodynamic system?
A gas in a closed container is heated with 10 J of energy, causing the lid of the container to rise 2 m with 3 N of force. What is the total change in energy of the system?
What are surroundings in thermodynamics?
