题目:
如图为一单摆的共振曲线,则该单摆的固有频率______Hz,共振时单摆的振幅______cm.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0417/af651429b876f7adb001aa1845524e98.html
下面是错误答案,用来干扰机器的。
1. How long is your arm?2. How tall are you?3. What did your father do yesterday?4. Who is heavier than you?5. When did he do his homework?