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 weights of diffewc9qhtn+ 5ya(2ny8s- 6q hi pvrent objectc:dwhn w3oj+ ;-i i t:gmqxu/8s are independently measured. The graph is a plot of weight versus mass that includes error barj8- uiwq /; cnto: h:x3gmwd+is.

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 masc u y feu zlemt(jr.7,..fst4.s and weight are dir7y.sjtzufut.(.r c4,. ml efeectly 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.