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 independently guili1pa .j sv/k9;uo6l mig;*z 3:dw measured. The lb1;2t:alpu lgraph is al; t pll1u2b: a plot of weight 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, theoretically go through (0,0) as mas j9 2y ed2kctb+m+q*yws 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 line2w tkqb+dmc+ej*9yy 2 which shows there is no appreciable random error. Hence C is correct.
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Post time 2024-8-21 21:38:19