As shown in the following illustration.There is some water in the sealed container and the height from the bottom to the surface of the water is 10cm,if we put the container upside down,What’s the height(cm) from the surface of the water to the bottom? 如图所示,在密封的容器中装有一些水,水面到底部的高度是10厘米,如果将这个容器倒过来,请你求出水面到底部的高度是多少厘米?
You have 3 weights:1 kg,3 kg and 9 kg as well as an equal arm balance,as shown.How many different weight objects can you weigh with these three?[Remember the weights may be placed on either side] 翻译:你有3个砝码:1公斤、3公斤和9公斤,以及一个托盘天平,你可以称出多少个不同的重量?(记住砝码可以放在天边两边的任意一边)
There is an electric toy formed by a rectangles(8.28cm×5.14cm)and a circle of radius 3cm(with a baby face on it),they connect at Ponint A And E(as in the construction).If the circle rolls from Point A along the rectangular inner wall(no slip).Finally returns to the original position. I.Please sketch the circle with a baby face at Position B,C,D respectively. II.The circle rolls
You have 3 weights:1 kg,3 kg and 9 kg as well as an equal arm balance,as shown.How many different weight objects can you weigh with these three?[Remember the weights may be placed on either side] 翻译:你有3个砝码:1公斤、3公斤和9公斤,以及一个托盘天平,你可以称出多少个不同的重量?(记住砝码可以放在天边两边的任意一边)