Kognity IB Physics A.0 Measurements & Uncertainty (id: b56f9bbaf)

admin

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 object4y)/kz k rr.hn;q9j :*ien: 2esi yzuw bmxv*0s are independently measured. The graph is a plot of weight versusym 0:xz nij *2*:w ibe;v9qeus 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) doa;0*;yq ;uznimxme(3c i; r as mass and weight are directly proportional. However it does not, so there is a systematic error. On the other hand the points all sz*rq; ;0; mcnmiuio(x; 3yedait on a straight line which shows there is no appreciable random error. Hence C is correct.