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

[单选题]
The masses and weights :.lgeu,6vm httd y4 /eof different objec 0nsh-g-s8o/ nc) zq g(mw)moyts are independently measured. The graph is a plot of weight versus mass that includes error cz(w -m8hs)-on0/qg gnms )yo 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 (z3hpzevwn x) (i2nj h/lbq 9*2-s vwm7in-x7 l0,0) as mass and weight are directly proportional. However it does not, so there is a systematic error. On t w7swh-7/qihen lzbjn z2 n(x-*xlpi v) mv923he other hand the points all sit on a straight line which shows there is no appreciable random error. Hence C is correct.