Scientific Skills & Tools (id: a948b46c0)

本题目来源于试卷: Scientific Skills & Tools，类别为 IB物理学

[单选题]

A rectangle has length L =$(2\pm0.1)$ cm and width W =$(3\pm0.2)$cm.

What is the uncertainty of the perimeter of the rectangle?

A. 0.08cm
B. 0.2cm
C. 0.3cm
D. 0.6cm


参考答案:  D


本题详细解析:

Perimeter = 2$(L+W)$

uncertainty of perimeter will be calculated by adding the uncertainties of the four sides of the rectangle which gives $(0.1+0.1+0.2+0.2)= 0.6 \,cm$

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