有題數唔識計

2007-10-02 12:12 am
The speed of sound in air at room temperature is about 343m/s.Calculate this speed in miles per hour(mph).

answer:767mph

回答 (1)

2007-10-02 12:42 am
✔ 最佳答案
1 mile = 1609 metre
1 hr = 3600 sec

The speed of sound in air at room temperature is about 343m/s
= 343 / 1609 * 3600 mile/hr
= 767.43 mile/hr

I hope this can help your understanding. =)
參考: My knowledge


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