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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is heat in thermodynamics?
π‘ Hint: Think about how energy moves when two objects of different temperatures are in contact.
Question 2
Easy
What does internal energy refer to?
π‘ Hint: Consider the molecular level of energy within a substance.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Heat always flows from which to which?
- Cold to Hot
- Hot to Cold
- Equally both ways
π‘ Hint: Think about your experiences with hot coffee or tea.
Question 2
True or False: Internal energy is affected by how the energy state was achieved.
- True
- False
π‘ Hint: Recall the definition of state variables.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A gas in a piston absorbs 500 J of heat and does 200 J of work. What is the change in internal energy?
π‘ Hint: Use the equation ΞU = ΞQ - ΞW to guide your calculation.
Question 2
If a closed system expands doing 150 J of work and there is no heat exchange with the environment, how does this affect the internal energy?
π‘ Hint: Consider the relationship of work, heat, and internal energy from the First Law.
Challenge and get performance evaluation