Exam-style question
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A gas occupies a volume of 2.0 m³ at a pressure of 100 kPa. If the volume is reduced to 1.0 m³, what will be the new pressure of the gas, assuming the temperature remains constant? Use Boyle's law. Scenario focus: use angular speed in a distinct A-Level Physics context and identify the relevant physical quantity before choosing the answer.
Model answer
What a good answer should say
- The new pressure of the gas is 200 kPa.
Explanation
Why this works
The correct answer is The new pressure of the gas is 200 kPa.. This option is correct for Thermal physics because it applies the angular speed idea in the stem and keeps the relevant quantity, unit, and physical conclusion together.
The alternatives either use a neighbouring formula, omit a required variable, or describe a different physical situation.
Common mistake
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