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 different objects are ijm/h hkgz4 3,tndependently measured. Teqzkv jj- 7fu-j0k)+f4wao)y he graph is a plot of weight versus ma740e+) ukz)fyj -vqjakjwo f-ss 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 and weigh( uwjlj-fl5 wsa/ x6(opwb,g+t are directly proportional. However it does not, so there is a systematic error. On the other hand the points all sit on a s6ol(w- jg aws5(jpbu,fwx/ l+traight line which shows there is no appreciable random error. Hence C is correct.