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 independently measuredhgu ;d87hw/(; :atxxcc4vp ohc4gau09o8 7k0tb zlds. The graph is a plot of weight versus mass that includes eto 79s0 zbkld8rror 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 througi qbsqi0n6,:h(-jah)n .tdd u ;jp5okh (0,0) as mass and weight are directly proportional. However it does not, so there is a systematic error. On the other hand t(n:bj;q,i u5d-)hk id pahjnq. o ts06he points all sit on a straight line which shows there is no appreciable random error. Hence C is correct.