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

[单选题]
The masses and weights of dw (u n5mo2xgj)ifferent objects are y1j zp:l tn6/zindependently measured. The graph is a plnj:p1/6 zz ytlot of weight versus mass that includes error 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, theoretct2(wc- *5 z eute1fkeically go through (0,0) as 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 tcek (f*uee5-t 2zw1cno appreciable random error. Hence C is correct.