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gc textbook chapter 11 Vibrations and Waves (id: 2fa87a66a)

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admin 发表于 2024-12-27 14:47:27 | 显示全部楼层 |阅读模式
本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves,类别为 IB物理学

[问答题]
Why can you make wate5o-,lg.7p, zsu1ng7aw;bw 9xrx : lw wsldbr4r slosh back andpa4kv3 zu ba;: forth in a pan only if you shake the pan at a certain frequenu4v 3zkab:a; pcy?




参考答案:
To make the water “slosh”, you must shake the water (and the pan) at the natural frequency for water waves in the pan.  The water then is in resonance, or in a standing wave pattern, and the amplitude of oscillation gets large.  That natural frequency is determined by the size of the pan – smaller pans will slosh at higher frequencies, corresponding to shorter wavelengths for the standing waves.  The period of the shaking must be the same as the time it takes a water wave to make a “round trip” in the pan.


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