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

[单选题]
The masses and weights of differe c;rci)ty0 hi9c3bk9wnt objects are independently bd jd 23sa hh9i *ouk7e9d 7ppb;o(ia2measured. The graph is a plot oih7 db p23(9ahd2b;9 j*ueki od7ospaf 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 sa2h)ymd2qsm95nq k e9hould, theoretically go through (0,0) as mass and weight are directly proportional. However it does not, so there is a systematic error. On the other handqmm2ndse ayq9) kh529 the points all sit on a straight line which shows there is no appreciable random error. Hence C is correct.