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

[单选题]
The masses and weights of different objects are independe0 a4uiuwr3 6n8(stup rz :/6jse /o+psj:ij jtntly measured. The graph is a plot of weigho sis/t6jz e:jj+/j p:t 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, theoretiom fp*h-gko ,,kf6gi( cally go through (0,0) as mass and weight are directly proportional. However it does not, so there is a sipk-6g*oo,f fkg(, hmystematic 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.