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

[单选题]
The masses and weights of differe sp v7: chkkg4*2e1kylmqn w0z9w b,x(nt objects are independen0xl ut u:8/3pyu5etuw qjbj.9tly measured. The graph is a plot of weight versus mass that inc3qlu5txyuj 9 0jbu./p:uw e 8tludes 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, theoreticallyr)j .; ,wefksbow6cv 4 go through (0,0) as mass and weight are directly propowvs,6w f kcb)jo .4;rertional. However it does not, so there is a systematic error. On the other hand the points all sit on a straight line which shows there is no appreciable random error. Hence C is correct.