Advertisements
Advertisements
Question
A hot cup of coffee is kept on the table. After some time it attains a thermal equilibrium with the surroundings. By considering the air molecules in the room as a thermodynamic system, which of the following is true
Options
ΔU > 0, Q = 0
ΔU > 0, W < 0
ΔU > 0, Q > 0
ΔU = 0, Q > 0
Advertisements
Solution
ΔU > 0, Q > 0
APPEARS IN
RELATED QUESTIONS
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.
The science of measuring temperatures is called?
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
What are the different types of thermodynamic systems?
What is meant by ‘thermal equilibrium’?
What are intensive and extensive variables? Give examples.
What is an equation of state? Give an example.
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?
