论文部分内容阅读
一、与密度有关的图象题例1如图1所示,甲图表示物体的质量和体积的关系,乙图表示物质的密度跟体积的关系,由甲图可知,120 g的D物质的体积是cm3,从乙图中可见,阴影部分S的面积大小表示的是物体的.图1解析:在D图线上任取一个与网格结点相交的点,如取V=10 cm3,m=6 g的这一点,即可求出D物质的密度ρ=m/V=(6g)/(10 cm3)=(0.6 g)/(cm3).120 g的D物质体积V=m/ρ=(120g)/(0.6 g/cm3)
I. Density-Related Images Example 1 As shown in Figure 1, Figure A shows the relationship between the mass and volume of the object. Figure B shows the relationship between the density and the volume of the material. As can be seen from Figure A, 120g of substance D The volume is cm3, can be seen from the B, the size of the shaded area S represents the object.Figure 1 Analysis: Take a point on the D line intersects the mesh node, such as take V = 10 cm3, m = 6 g, we can get the density of substance D ρ = m / V = (6g) / (10 cm3) = (0.6 g) / (cm3) = (120 g) / (0.6 g / cm3)