Current location - Plastic Surgery and Aesthetics Network - Wedding supplies - (20 12? In order to identify whether a handicraft is made of copper, Xiaoling did the following experiment: (1) Weigh the quality of the handicraft, as shown in figure 1.
(20 12? In order to identify whether a handicraft is made of copper, Xiaoling did the following experiment: (1) Weigh the quality of the handicraft, as shown in figure 1.
(1) The scale value on the scale of the balance in the figure 1 is 0.2g According to the reading method of the balance, the quality of the handicraft is m= weight and mass+scale value corresponding to stray code = 50g+20g+10g+5g+4g = 89g;

(2) The graduation value of the measuring cylinder in Figure 2 is 2cm3, and the total volume of handicrafts and water, Vtotal =44cm3, then the volume of handicrafts, vWork = vtotal-vWater = 44cm3-30cm 3 =14cm3;

(3) The density of handicrafts ρ = MV = 89g14cm3 ≈ 6.36g/cm3 = 6.36x103kg/m3.

(4) According to the density table, the density of copper is ρ copper =8.9× 103kg/m3. Because ρ work is smaller than ρ copper, this handicraft is not made of pure copper.

So the answer is: (1) 89; (2) 14; (3)6.36× 103; (4) no.