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

[单选题]
The masses and weights of different objects are independently measr)xyk edy ktmh;2f l/kds4vm0u,71 q +ured. T/p(pjtfk 0q t;he graph is a plopf t;tp0 (jq/kt of 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 should, theoret,oyn.ra d;eo sx 1hbs f*1c,ogris;(6ically go through (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 sit on a straight line which shows there is no appreciable random error. Hence i,*(o1 1nra;.hcsgdfo , ssrb;y x eo6C is correct.