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

[单选题]
The masses and weightdsi51o6 x a1ceesbwop(ll.y0 l . f;h5s u7do*( y 0kaoiof different objects are independently measured. The graph is a ply dioko(07a u*ot 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, theoretically go through (0,0) as mass and e;c e7w (xx2mnweight are directly proportional. However it does not, so there is a sw2 e 7cex;(nmxystematic 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.