The preparation, crystal structure, and electrical conduction properties of Rb[Pt{S2C2(CN)2}2]·2H2O are described. The planar anions are arranged in a dimeric eclipsed configuration to form a columnar stacked structure. The room-temperature conductivity in the platinum atom chain direction is 2.5...
水平段导轨所处空间存在方向竖直向上的匀强磁场,磁感应强度为B。导体棒a和b的质量均为m,电阻值分别为Ra=R,,Rb=2R.。b棒放置在水平导轨上且距弯曲轨道底部Lo处,a棒在弯曲轨道上距水平面h高度处由静止释放。运动过程中导轨棒和导轨接触良好且始终和导轨垂直,重力加速度为g。求:...