Kognity IB Physics A.0 Measurements & Uncertainty (id: b56f9bbaf)

[单选题]
The masses and weightccuog6 y3:1wel6 ksy3d2 oq8 4ac9yzjs of differenmx 4;g)yu)/bem +j s)ldagyte:v6-xwz hi97wt objects are independently measured. The graph is a plot of weight versus mass that includes t em b)hlmy+dxw sv z4yi/6;)wj ggu-7xa):9eerror bars.

What do these experimental results suggest?

A. The weight of an object is inversely proportional to its mass.
B. The measurements show a significant random error but small systematic error.
C. The measurements show a significant systematic error but small random error.
D. There is no correlation between the weights and the masses of the objects.


参考答案:  C


本题详细解析:
We know that the line should, theoretically go through (0,0) a k5)hw+tg(tj(6 okum qs mass and weight are directly proportional. However it does not, so there is a systematic error. On the other hand the points all sit on a straight line which shows there is no o6 q(k5k) h(jm wu+tgtappreciable random error. Hence C is correct.