本题目来源于试卷: Kognity IB Physics A.0 Measurements & Uncertainty，类别为 IBDP Physics
[单选题]
A student measures a distance four sgq (tuxhmb ux. 7+53y2 /ko1qkr q nvmx//eu:times. The readings afoqev*l28we 96x bjlu 0m12 qhre 37.8 cm, 37.9 cm, 38.1 cm, 38.2 cm. What is the b2fh8jb veo0ll2e 1 xmu 6*9wqqest estimate of this measurement?
A. $37.8 \pm 0.2 \; cm$
B. $37.8 \pm 0.4 \; cm$
C. $38.0 \pm 0.2 \; cm$
D. $38.2 \pm 0.4 \; cm$
参考答案: C
本题详细解析:
The mean of the measurements is 38.0 cm. The extremes (37.8 e8 tti1w n80tgcm and 38.2 cm) are both 0.2 cm away from the mean. So C istn8t0ti 1eg8 w the correct answer.
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Post time 2024-8-21 21:38:19