Exam-style question
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What is the order of magnitude for the speed of sound in air?.
- A.1 m/s
- B.100 m/s
- C.1000 m/s
- D.10,000 m/s
Model answer
What a good answer should say
- 100 m/s
Explanation
Why this works
The speed of sound in air is approximately 343 m/s at room temperature, which rounds to 100 m/s when estimating orders of magnitude. This helps in comparing speeds of different objects.
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