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

[单选题]
The masses and weigh t+5ph0 6r;bgpava:ez1sbdz4at s fh8p (jnhbl2 w7r33yax)3ts of different objects are independently measured. The graph is a plot of weight versus mass twa(33nt)2h p sfxya hbl8jr 73hat 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, theoreticab.oa)/ pxk1mq lly go through (0,0) as mass and weight are directly proportional. However it does not, so there is a systematic error. On thbm1 k) qx/pa.oe other hand the points all sit on a straight line which shows there is no appreciable random error. Hence C is correct.