gc textbook chapter 11 Vibrations and Waves (id: ad042f41e)

本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 IB物理学

[填空题]
A tsunami of wavelength 250ybm5z+m6b :m;vu1g nj9z2 llhtdgt6 3 km and veloci1ajs(be-.wr kxw8c 8rty 750 km/h travels across the Pacific Ocean. As it approachexk8w8es -a.bcwj r1(rs Hawaii, people observe an unusual decrease of sea level in the harbors. Approximately how much time do they have to run to safety? (In the absence of knowledge and warning, people have died during tsunamis, some of them attracted to the shore to see stranded fishes and boats.)    min

参考答案: 10±2%


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