Traditional Culture Encyclopedia - Photography major - A brave photographer

A brave photographer

(1) In Figure A, the mass of the empty beaker is m1=14.4g; In Figure B, the total mass of beaker and wine m2 = 72g;;

So the quality of rice wine is m = m2-m1= 72g-14.4g = 57.6g. 。

In Figure C, the volume of rice wine is 60cm3;;

The density of yellow rice wine is ρ = MV = 57.6 g60g cm3 = 0.96g/cm3 = 0.96x103kg/m3.

(2) During the operation from Figure B to Figure C, it is impossible to completely pour rice wine into the measuring cylinder (some rice wine sticks to the beaker wall), resulting in a small volume measurement of rice wine. According to the formula ρ=mV, when the mass is constant, the volume is small and the density value is large. In order to reduce the experimental error, the volume of rice wine can be measured first, and then the mass of beaker and remaining rice wine can be measured, that is, the experiment can be carried out in the order of B-C-A C-A.

So the answer is:

( 1)

Physical quantity: mass of empty beaker m 1/g total mass of beaker and wine m2/g volume of wine V/cm3 density of wine ρ/kg? The measured value of m314.472600.96×103 (2) is too large; Experiments can be carried out in the order of b-c-a c-a.