Practice First Law Of Thermodynamics (B.4.1) - Theme B: The Particulate Nature of Matter

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6 sample questions

Question 1.
What does the First Law of Thermodynamics state?
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Consider the concept of energy conservation.
Question 2.
In the equation ΔU = Q - W, what does Q represent?
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Think about energy transfer due to temperature difference.
3Question 3.
What is the equation for the First Law of Thermodynamics?
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Think about how energy is combined and used.
4Question 4.
True or False: Work can be created without a change in internal energy.
- True
- False
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Recall how energy transformations work.
Question 5.
You have a system that receives 200 J of heat and does 75 J of work. What is the change in internal energy?
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Use the conservation formula to find the change.
Question 6.
If a thermodynamic cycle returns to its initial state after 10 J of heat added and 10 J of work done, how would you describe the internal energy at the end?
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Think about how cycles operate under thermodynamics.

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