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

[单选题]
The masses and weights of diqmb t v;:4 3wu*hdckx2--twc afferent objects are independently measureq0d9oq zva)(ybnt zsaz*w ,67o, w ro-d. The graph is a plot of6,dzsq-ayrzt)(*bz o vwq0wn9 o 7,a o weight versus 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 shou os-lrix6 p;2kld, theoretically go through (0,0) as mass and weight are directly proportional. However it does nox ropkl -i62s;t, 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.