理解能力推理能力1

理解能力、推理能力乐清中学张一平04年对比04年对比返回返回(C)D(BD)(D)(B)0-3.4eV-6.0eV-13.6eV-54.4eVEE4E3E2E1(ACD)CABO(C)如图所示的装置中，木块如图所示的装置中，木块B B与水平桌面间的接与水平桌面间的接触是光滑的，子弹触是光滑的，子弹A A沿水平方向射入木块后留在木沿水平方向射入木块后留在木块内，将弹簧压缩到最短，现将子弹、木块和弹簧块内，将弹簧压缩到最短，现将子弹、木块和弹簧合在一起作为研究对象合在一起作为研究对象(系统系统)，则此系统在从子弹，则此系统在从子弹开始射入木块到弹簧压缩至最短的整个过程中：开始射入木块到弹簧压缩至最短的整个过程中：A A动量守恒、机械能守恒；动量守恒、机械能守恒；B B动量不守恒，机械能不守恒；动量不守恒，机械能不守恒；CC动量守恒、机械能不守恒；动量守恒、机械能不守恒；D D动量不守恒，机械能守恒。动量不守恒，机械能守恒。(B )(CD)A图图 示示返回x/my/m0 1 2 3 4 5 6图1t/sy/m0 1 2 3 4 5 6图2BOOadcb(B)(A)图baBabB返回(AC)下一题SN地磁地磁S极极地理北极地理北极返回AB射向地球的带电粒子PQ下一题从南往北看可得剖面图返回C题图下一题NSNSadcb左侧右侧N俯视图N NI I正视图FI IF俯视图I IBD图返回t0 t1 t2t0 t1 t2t0 t1 t2t0 t1 t2AEFGHPQSRBAB(BC)abcF1F2F3F4B地球同步卫星到地心的距离地球同步卫星到地心的距离r可由可由r3=a2b2c/(42)求出，已知式中求出，已知式中a的单位是的单位是m，b的单位是的单位是s，c的的单位是单位是m/s2。则。则A.a是地球半径，是地球半径，b是地球自转的周期，是地球自转的周期，c是地球表是地球表面处的重力加速度面处的重力加速度B.a是地球半径，是地球半径，b是同步卫星绕地心运动的周期，是同步卫星绕地心运动的周期，c是同步卫星的加速度是同步卫星的加速度C.a是赤道周长，是赤道周长，b是地球自转的周期，是地球自转的周期，c是同步卫是同步卫星的加速度星的加速度D.a是地球半径，是地球半径，b是同步卫星绕地心运动的周期，是同步卫星绕地心运动的周期，c是地球表面处的重力加速度是地球表面处的重力加速度(AD)(D)vP-x0 x00yxEF返回x0-x0vy0 xAx0-x0vy0 xBx0-x0vy0 xCx0-x0vy0 xD返回几 点 想 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