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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the First Law of Thermodynamics state?
π‘ Hint: Think about energy transformations.
Question 2
Easy
What is the formula for the First Law?
π‘ Hint: Remember the symbols for each term.
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
What does the First Law of Thermodynamics imply?
- Energy can be created
- Energy can only change forms
- Energy is always lost
π‘ Hint: Look beyond the surface; think about energy in different contexts.
Question 2
True or False: Internal energy can remain constant if a system does work.
- True
- False
π‘ Hint: Consider the relationships between work and energy.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A gas system in a cylinder absorbs 600 J of heat and performs 250 J of work on the environment. Calculate the change in internal energy and interpret the result.
π‘ Hint: Pay attention to the signs! Remember how heat input and work output affect internal energy.
Question 2
If a heat engine consumes 15,000 J of heat and converts only 4,000 J into work, calculate the efficiency and discuss what this implies about its performance.
π‘ Hint: Revisit the efficiency formula; it's all about understanding energy use.
Challenge and get performance evaluation