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Physics Unit11: Vibrations and Waves (id: 2ec42bc1f)

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admin 发表于 2024-2-5 14:35:45 | 显示全部楼层 |阅读模式
本题目来源于试卷: Physics Unit11: Vibrations and Waves,类别为 通用国际物理

[单选题]
A mass vibrates back and forth from the fbes gkv75jmo5, c)bj-ree end of an ideal +7b dk(y62v5ane nwsd spring of spring constant 20 N/m with an amplyka6d vb(e 2wdns5n+7 itude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

A. zero
B. 0.90 J
C. $0.45 \; J$
D. It is impossible to give an answer without knowing the object's mass.


参考答案:  A


本题详细解析: 暂无

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