某波的頻率為 100 Hz,波長為 0.5 m,求波速。
Answer and explanation
Correct answer: B. 50 m/s
- Step 1: 波速 m/s。
- Step 2: 單位檢查:Hz m m/s。
Answer
50 m/s.
Why not the others: 200 m/s:用了 ;100.5 m/s:把頻率與波長相加;100 m/s:多乘了 2。
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