• 2022-06-03
     图9-26所示,金属球[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]和金属球壳[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]同心放置,它们原先都不带电。设球为[tex=0.857x1.0]6WwbFXETRyeyXlvAruSoNg==[/tex],球壳[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的内、外半径分别为[tex=0.857x1.0]BNzznGkXRFuGyw2vMy6rWw==[/tex]和[tex=0.857x1.0]Fz01PbYkU0SRGm3tB5KjiA==[/tex]。求在下列情况下[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]、[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的电势差:使[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]带[tex=1.286x1.143]HtShgpkNmCs66SDQIt6cYg==[/tex][img=191x199]17e1ac6b01d9ad2.png[/img]
  • 使[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]带[tex=1.286x1.143]HtShgpkNmCs66SDQIt6cYg==[/tex]:这时[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的内表面带上了[tex=1.286x1.143]NeILClIc8twxeO5vjYm8Dw==[/tex],外表面带上了[tex=1.286x1.143]HtShgpkNmCs66SDQIt6cYg==[/tex],[tex=1.929x1.286]+A91pi2VXLtyYrVQoi0TLA==[/tex]之间的空间的电场为[tex=4.714x2.286]YZ23GCsTjoNLPTRwfrg40Big62RRhKkXlTjecJenOGk1sMq8vMokhlGsT9YaI9B6[/tex]方向沿径向由内向外。所以[tex=19.643x2.929]bLIDuo+D2ZEHaxVD9WPhaAhVz4zmgPj7Hc4Nob7fCW2dij/37ojQtzUOuTsL/bPyJwXCmJ215WwviJzE3hZqTJ9U0/Nw9CEOS3iXD9s9odZpsl8rtLX4xzhTtjUL3gA9kpuHVHvw/YhP7bSGBvKONMxy2Ln1buFo5mBytH1BPb/X25A1CEuPen91IJ1bJvVa[/tex]

    举一反三

    内容

    • 0

      结构分别承受两组荷载作用,如图[tex=1.929x1.286]+A91pi2VXLtyYrVQoi0TLA==[/tex]所示,下列等式中哪些是正确的?各位移以与相应广义力指向一致为正。[img=728x191]179cc56b9ed8e72.png[/img](1)图[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]中[tex=0.857x1.0]m2DKAQtGuc1DyN3zyNlILg==[/tex]截面的转角一图[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]中[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]点的水平位移;(2)图[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]中[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]点的水平位移=图[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]中[tex=0.857x1.0]m2DKAQtGuc1DyN3zyNlILg==[/tex]截面的转角;(3)图[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]中[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]铰两侧截面相对转角=图[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]中[tex=0.857x1.0]m2DKAQtGuc1DyN3zyNlILg==[/tex]点的水平位移;(4)图[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]中[tex=0.857x1.0]m2DKAQtGuc1DyN3zyNlILg==[/tex]点水平位移=图[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]中[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]铰两侧截面相对转角。

    • 1

      设[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]和[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]是人,[tex=0.643x1.0]fYkALuFzYlFm0R716i1EGA==[/tex]是全世界所有人构成的集合,[tex=4.214x1.357]aYmvYybBxWxg0+7/ydOlVw==[/tex]。请问[tex=2.643x1.357]SIoYay3a5WDNlRaQ3ZJ11Q==[/tex]是否为偏序集,如果[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]不比[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]高

    • 2

      求向量[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]与[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的夹角:[tex=5.429x1.357]28vNNArDuRRnb+06piGt7g==[/tex],[tex=6.143x1.357]Uqwu1QGYB2waFjV52ImPKg==[/tex] .

    • 3

      设[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]和[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]是人,[tex=0.643x1.0]fYkALuFzYlFm0R716i1EGA==[/tex]是全世界所有人构成的集合,[tex=4.214x1.357]aYmvYybBxWxg0+7/ydOlVw==[/tex]。请问[tex=2.643x1.357]SIoYay3a5WDNlRaQ3ZJ11Q==[/tex]是否为偏序集,如果[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]比[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的个子高

    • 4

      求向量[tex=0.571x0.786]c59+3vo0/Vn/FvNRhDRu5g==[/tex]与[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]的夹角:[tex=5.429x1.357]2a1nHnVLv213QxcHtU3H+w==[/tex],[tex=5.357x1.357]1D0C8TkZZ+4Sbb/nx0LsXA==[/tex] .