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 2mdcgsze dr/oz n1o 7).-s h:d of different objects are independently afm c y-c8k+e*e+sjz:measured. The graph is a plot of w s+f *8e+kacmcz ye j:-eight 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 s ;k )ey)ru-5gha1*qzo7vry fshould, theoretically go through (0,0) as mass and weight are directly proportional. However it does q)5yhers7 1yk) zgau r*;vo-fnot, 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.
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Post time 2024-8-21 21:38:19