3.8.2 - First Law of Thermodynamics
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Practice Questions
Test your understanding with targeted questions
What does the First Law of Thermodynamics state?
💡 Hint: Think about energy transformations.
What is the formula for the First Law?
💡 Hint: Remember the symbols for each term.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the First Law of Thermodynamics imply?
💡 Hint: Look beyond the surface; think about energy in different contexts.
True or False: Internal energy can remain constant if a system does work.
💡 Hint: Consider the relationships between work and energy.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Pay attention to the signs! Remember how heat input and work output affect internal energy.
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.
💡 Hint: Revisit the efficiency formula; it's all about understanding energy use.
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