本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 国际高中通用物理
[单选题]
A mass undergoes SHMi25ac*czs o uzi64a4ip)ch9p wit6xq2cgnz/hy9l,k xk46r/ qjo h amplitude of 4 cm. The energy is 8.0 J at this time. The mass is cut in half, and the system is a9k ,o4r26yg nkc6jlxxq/qz/ hgain set in motion with amplitude 4.0 cm. What is the energy of the system now?
A. $2.0 \; J$
B. $4.0 \; J$
C. $8.0 \; J$
D. $16 \; J$
参考答案: C
本题详细解析:
暂无
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