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 weighta-0c8qdkgiaf+(jr vwc) / ,ovrtp . )ls of different objebft-.z.;lwd2 +cw p 8mgss4d zcts are independently measured. The graph is a plot of weight versus mass thc. dfsb2sw4+m .t zp;zgl-wd8at 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 shoulyia1 3)r )urje egwq/q r7ng00d, theoretically 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 no appreciable random error. Hence3y1nqi0 )/u0ae e wg)rr g7rqj C is correct.