The value of absolute zero on the Fahrenheit scale:
Correct answer: B. -459.4 °F
- A. 359.4 °F
- B. -459.4 °F
- C. 100 °F
- D. -259.4 °F
Explanation
Absolute zero is -273.15 C. Converting with F = (9/5)C + 32 gives (9/5)(-273.15) + 32 = -491.67 + 32 = -459.67 F, which this paper rounds to -459.4 F.
This question appeared on the NUMS 2018 paper, which you can sit online with every answer explained.
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Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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