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

admin

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 oeoo6(71aq,n 4xf2 l0ccaiqqr ln0ua6 f diffet(ei+bo..kj1 9k vzzjrent objects are independently measured. The graph is a p(.o ekj9.ikvtz1b j+zlot 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, theoretical9kmn qgc(( cf9ly go through (0,0) as mass and weight are directly proporti9gfc ( 9nkq(mconal. 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 C is correct.