1、如图所示，质量均匀分布的薄圆盘，质量为m，半径为R，轴O与圆盘所在面垂直，且通过圆心，则圆盘对该轴O的的转动惯量是<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/7e7becd1e61f4a63b9131512754c10f4.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/b7879f7377c64d3e85868ea0dbfec71e.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/263ab867d6ec4c209bcc109ff27c4cd5.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/44592dde9ecf4d059307bcf4eb75d66f.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/4ceb4527c74046378f2ba87e4d779d06.png" />

真空中两块相互平行的无限大均匀带电平面A和B，A平面电荷面密度为<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/5a974aa307644728ad727db9bd36dac7.png" />， B平面电荷面密度为<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/649c91caf58f410698c2b97afebac7af.png" />，两板间距离为a，当一点电荷q从A面移到B面时电场力作的功为： A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/add10ccf53eb4b489eef9dc1e0843c3b.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/cf8dde3f211247a18ddb64f5734c88e2.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/85e25cb4e0dd49eba7f8f1dfad77e045.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/a36e1713d2fd472fa6c1259ccc0706d4.png" />

一质点作简谐振动，它的振动曲线如图所示，则运动方程是<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/d3a23c3ad54946949b58948ef5d30aa9.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/cc1547a7b6484c08a669da27a1b842e3.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/dca51c05ea27452387ec76a01040225a.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/821e729c3259412d9588404efe0ca498.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/8937822da1054dcf86d8b512ac305e06.png" />

在康普顿效应实验中，若X射线散射光波长是入射光波长的1.2倍，则入射光光子能量<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/5ccca22180454a0ebbf930aae19a66c7.png" />与散射光光子能量<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/3d9cfb3a752d470580e4af52ee4d17f1.png" />之比<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202004/5d1fc90964e64ee0bac62f0bf893db96.png" />为 A: 1.6 B: 1.2 C: 2.0 D: 0.8

某反应在标准态和等温等压条件下，在任何温度都能自发进行的条件是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/63c6a7b5b3114c1095cb68d96ebd27ec.png" />&lt; 0，<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d11dd437fcbe440d886e25a9a04f2c0e.png" />&gt; 0 B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/63c6a7b5b3114c1095cb68d96ebd27ec.png" />&gt; 0，<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d11dd437fcbe440d886e25a9a04f2c0e.png" />&gt; 0 C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/63c6a7b5b3114c1095cb68d96ebd27ec.png" />&gt; 0，<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d11dd437fcbe440d886e25a9a04f2c0e.png" />&lt; 0 D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/63c6a7b5b3114c1095cb68d96ebd27ec.png" />&lt; 0，<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d11dd437fcbe440d886e25a9a04f2c0e.png" />&lt; 0