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dichthienhyjackson
2 năm trước
câu 1: Vật 1 thực hiện 1500 dao động trong thời gian 20 giây. Trong thời gian 0,5 phút vật 2 thực hiện đc số dao động nhiều gấp 2 lần vật 1. a) Tính tần số dao động của mỗi vật ? b) Vật nào phát ra âm bổng hơn ? Giúp mik câu này nha!
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GIÚP VỚI HUHU There isn't a TV in her bedroom - she .................................. No hotel on the street is newer than this hotel - This hotel ......................... Can you tell us the way to the bus stop ? - How You are going to Han river but you ' re . What do you say ? ................................... Hung 1.60 meters tall . Ba is 1.50 meters tall - Ba is 10 ................. No house in the vilagge is older than this one - This house .................... Winter is cloder than any older season of the year - Winter is ..................... must /off/keep/ the / you / grass ...................... pick/ in /you/ the/ flowers/ mustn't/ park ............................................................ The Mekong /in /river/ longest/ the/ VietNam /is. ....................................................... Doing our homework / important /reading a novel . ................................................. It is wrong of you to talk in class - you mustn't .................... It is necessary for us to finish homework before going to class - we mút ............................

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