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 ar zlew 45,)ox /wbw7ax pe inde i-euq.v -0u ww-gq*iy pendently measured. The graph is a plot of yie.-wi 0-vuqw * qg-uweight 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 should, theoretically go thr;p69j ndk(sw 49yy(+lvucwp r ough (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 sk9s(jpp4 6c(unyly9w + ;d rwvit on a straight line which shows there is no appreciable random error. Hence C is correct.
| 
Post time 2024-8-21 21:38:19