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

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本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics

[单选题]
The masses and weighfcsg 6l m5:,zt4h0h edts of different objects are ind :oeq/rvb9zbrf 3) e dbxyum.88fp: a1ependently measured. The graph is a plot of weighterve 3yb1p/ xro8bb. zqmfd :8:f9a)u 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, theoretically go through (0,0) as mass)z 2xpsdoj21-co0 rg:jr ln91v io9dr and weight are jxrl o92 9sn-vc 2dro z0)g :11prjoiddirectly 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 appreciable random error. Hence C is correct.