ρ=m/v作用大

• 作 者: 徐斌斌 胡丽
• 出 处: 中学生数理化(八年级物理)(配合人教社教材)
• 发表日期: 2014年12期
• 关键词: 社交活动 m/v 气凝胶 同样大小 参考答案 超高强度 塑钢门窗 航空航天 基米 图线

在社交活动中,人们常以鸡尾酒(如图1)来欢迎宾客.鸡尾酒以它口味多样、颜色鲜亮、层次分明而深得人们的喜爱.为什么鸡尾酒会呈现界限分明的情况呢?这里就涉及密度的知识.密度和生活的联系随处可见,下面我们就随手采撷一部分.密度与温度密度是物质本身的一种性质,一般来说某种物质的密度是固定不变的.但大部分物体都有热胀冷缩的性质,也就是说物体的体积会随温度的升高而增大,

In social activities, people often welcome guests with cocktails (Figure 1), cocktail with its diverse flavors, bright colors, distinct and well-loved people why the cocktail presents a clear distinction between the situation here involves the density Density and temperature Density is a property of matter itself, and in general the density of a substance is fixed, but most objects have a The nature of thermal expansion and contraction, which means that the volume of the object will increase with increasing temperature,