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 differ yrkll(u91iz;* yo ed,vgs 23 3ylll +phlkhq*5a a+p--cn:uuent objects are independently measured. The graph is a plot of weight versus ugu+ph ap--*lhs5cq:l ka ll3 y3+v2 nmass 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.evr/c7wn-*0/eijq g u qi7 qx,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 whie q*i egq -0.uwvx i7//n7rcqjch shows there is no appreciable random error. Hence C is correct.
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Post time 2024-8-21 21:38:19