Space Time & Motion A.3 Work Energy and Power (id: 5119e090c)

本题目来源于试卷: Space Time & Motion A.3 Work Energy and Power，类别为 IB物理学

[单选题]
A spring with spring constant $k$ is extended by a distance $x$.

The uncertainty of $k$ is 2% and that of $x$ is 3%.
What is the uncertainty of the potential energy stored in the spring?

A. 8%
B. 11%
C. 12%
D. 18%


参考答案:  A


本题详细解析:

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