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 d y+z*l wg:79z5yl5ski-lo kjxif 0;p.n6b dh zhy p4m)p*cjc9gu ferent objects are independently measured. The graph is a plot of weight 9 zg.6cnh4chp dpbp;ujm *0y)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 through (0,0) a j)5wqhnf ls2+s mass and weight are directly proportional. However it does not, so there is a systnsw+f l5j )hq2ematic 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.
| 
Post time 2024-8-21 21:38:19