• 2022-06-08
    长为L质量为m的均匀细棒,绕一端点在水平面内作匀速率转动,已知棒中心点的线速率为v,则细棒的转动动能为
    A:
    B:
    C:
    D:
  • A

    举一反三

    内容

    • 0

      电路如图所示。则u01、u0与 uI的运算关系分别为( )、( )。 <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/418adfb996644706aef30b7d2841ccb9.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ffe4934c2b0748428937c24c7ff16c3b.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1da45f59ab0845f7be8cdc1f80a78caa.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ca685a45d5764329b8551eb6eaeb6a58.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d3f91ade92954e7fbd65a917b04cc13b.png" />

    • 1

      在体积V内理想气体的配分函数是() A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/f06f3edbc1e2490db16ddf913dd8567e.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/f3bd5d2ed5784896920511b072867fb2.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/daf559fcf21a48b584a41773e83704ef.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/50e30867ae3f46e2b36a482a15bc0c39.png" />

    • 2

      一维谐振子处于<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/7117096d5bb94d5abc582889ebf7ad5d.png" />态中,则该谐振子能量取值分别为 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/cb815c204bbb46ec8279a3382b927106.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/fce0d76351cb404da913e76852c23f0f.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/b67a8f55418347e78d9fe5fc37d245a8.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/de94246b2e7b4f57a297ff91789ec026.png" />

    • 3

      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

    • 4

      如图所示,有一个均质圆盘的质量为m,绕固定轴o转动,某瞬时角速度为ω。该时刻的动能为T为( )。<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/573067f47bd946e8bcdd2d4075531913.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/43bec8b476e1438cbce0edcd49280772.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/f9a508d75fcb44d9ae1672732f8f99ca.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/df3d311700c84cc6b493f5ed810c9984.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/bc8a6b8308e54434a4eab5a865fefb06.png" />