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 weightsfo rpk7v+ ,6r4db tk0l76rsfp of different objects are in c cfe)ia v:di,zr3o5.dependently measured. The graph is a plot of w ar.vci c:) oiez,d5f3eight 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, theoreticallyzj, npy)l6kn5e gu 8e9 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 wu j8n eyzlk9)pg ne,56hich shows there is no appreciable random error. Hence C is correct.