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 通用国际物理

[填空题]
A tsunami of wavelength 250 km and velocity 750 km/h travels across the Pacifp+y * r9brgnxc 4;po( 03km2iqjnji2oi 6vjmmlj gy0/*c Ocean. As it approaches 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, smgy06jj*v /l mome of them attracted to the shore to see stranded fishes and boats.)    min

参考答案: 10±2%


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