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

[单选题]
The masses and weights:8z tc53yukh0k r;g wi of difg)8-isq kjo4 pferent objects are independently measured. The graph is a plot of weight versus mass that ipjs8iok-4q g)ncludes 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 thl65saisal+pqg6sq lq5vy+7 *rough (0,0) 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 which shows thereqa5plvgs7i5 aq *6sqly +ls+6 is no appreciable random error. Hence C is correct.