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如图所示,P、Q为两块带等量异种电荷的平行金属板,板长L=8×10﹣3m,板间匀强电场的方向垂直极板由P指向Q,场强大小E=4×104N/C.有一带正电且电量q=1×10﹣8C,质量m=1×10﹣1...
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高三上学期物理《》真题及答案
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