密度是0.9*10的3次方每立方米的冰块漂浮在水面上,露出水面的和水面下的体积之比是急要啊,并分析.注意格式

密度是0.9*10的3次方每立方米的冰块漂浮在水面上,露出水面的和水面下的体积之比是急要啊,并分析.注意格式
密度是0.9*10的3次方每立方米的冰块漂浮在水面上,露出水面的和水面下的体积之比是
急要啊,并分析.
注意格式

密度是0.9*10的3次方每立方米的冰块漂浮在水面上,露出水面的和水面下的体积之比是急要啊,并分析.注意格式
在水上漂浮时
F浮=水的密度*g*在水里面的体积
G重=m*g=g*冰的密度*整个体积
由于平衡
那么F浮=G重
也就说10*在水里面的体积=9*整个体积
则 露出水面的和水面下的体积之比是 1：9

我们可以这样里计算。
假设是1立方米的冰块。
那么冰块的重量是1*0.9*10~3=0.9*10~3kg
那么淹没在水中的冰块体积是0.9*10~3/1*10~3=0.9立方米
肯定露出水面的是0.1立方米
相比得0.1/0.9=1/9

Little Women
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In Little Women, you will meet the March sisters, Meg, Jo, Beth & Amy who live with their mother, Marmee, and their maid Hannah, during the Civil War. The first half...

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Little Women
===========
In Little Women, you will meet the March sisters, Meg, Jo, Beth & Amy who live with their mother, Marmee, and their maid Hannah, during the Civil War. The first half of the novel takes place while their father is away, serving in the war. Each sister has a distinct personality, a reader, an artist, a musician, the quiet one. You will get to know this family in touching little stories of their daily life. Each chapter seems to set up a moral lesson for the reader to learn. We also meet a wonderful set of neighbors, Mr. Laurence and his nephew "Laurie" who quickly find a place as part of the March family.
The second half of the novel, focuses on the girls as they leave their childhood and begin their journey into adult life. Lessons of friendship, family, and love are covered as we join the characters through the ups and downs of life, good times and bad. It seems that Louisa May Alcott used her own family as the basis for the stories in Little Women, basing the character Jo on herself. It is amazing how though the book was written in the late 1800's, so many things about humans remain the same. The foundations of life that are important in friendships, family & love don't change through time, as Alcott has shared with us. This is a book that young and old can read and appreciate。

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