Practice Efficiency Of Heat Engines (3.7.1) - Heat

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9 questions

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Exercise
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6 sample questions

Question 1.
What is a heat engine?
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Think about energy transformation.
Question 2.
Explain efficiency in the context of heat engines.
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Consider how much work is created from the heat used.
3Question 3.
What is the formula for efficiency in heat engines?
- Efficiency = \\( \\frac{W}{Q} \\)
- Efficiency = \\( \\frac{Q}{W} \\)
- Efficiency = 1
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Remember how we defined efficiency.
4Question 4.
Heat always moves from hot to cold objects?
- True
- False
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Think about natural energy flows.
Question 5.
A heat engine absorbs 3000 J of heat and does 750 J of work. What is its efficiency?
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Use the efficiency formula we studied.
Question 6.
Explain how improving engine efficiency can reduce environmental impact.
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Think about the relationship between fuel use and pollution.

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