[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO5t1DLRENqGfRO-ZeF6vP6pm1tC14vfRjA_oykiBWyI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-09-28 20:36:00",160463375,[8,9,10,11],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F66b10d278666082a9bc14f56a1477b9b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F054b4343322260501e1946a493cd5b1c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa157314c7b8329452eccb22940d57055.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F758980e229f46857aa530d173bf1a8db.png\">",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"4225bfc185ad699a10a4ca9c397f64d3","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F70cd2c85cc95c53c732b94b75d973c1b.jpg","大学物理C","52c88b6e836b4b2c8cd85dda01913be4","动量、角动量、能量测验","如图所示,圆锥摆的摆球质量为m,速率为v,圆半径为R,当摆球在轨道上运动半周时,摆球所受重力冲量的大小为( ) \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F39b086df7fe6531bf374742426c0c5a3.png\">",[21,33,42,51,54,64,73,82,91,100],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-09-28 20:35:59",160463367,[26,27,28,29],"角动量守恒,动能守恒","角动量守恒,机械能守恒","角动量不守恒,动量也不守恒","角动量守恒,动量也守恒","假设人造地球卫星绕地球中心做椭圆运动,则在运动的过程中,卫星对地球中心的( )","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],160463371,[37,38,39,40],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4c08a93e18e728d75b616c27cbea4e1b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4efbd3163b1ace7c4e2955d14c067f0c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6afcc6707d089a3969b0ca5b0720a90f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa94e6139535352dd55d20f4a8da35a18.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c18fc52487de90efc1c9c249d72c026.jpg\">",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],160463373,[46,47,48,49],"保持静止","向右加速运动","向右匀速运动","向左加速运动","一质量为m0的斜面原来静止于水平光滑平面上,将一质量为m的木块轻轻放于斜面上,如图所示.如果此后木块能静止于斜面上,则斜面将( ) \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F62c12ff3ff2b64e279093e738f790ea1.png\">",{"answer":52,"createTime":5,"id":6,"options":53,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":55,"createTime":56,"id":57,"options":58,"question":63,"source":31,"type":32},[],"2024-09-28 20:36:01",160463377,[59,60,61,62],"2","4","7","8","质量为20 g的子弹,以400 m\u002Fs 的速率沿图中所示方向射入一原来静止的质量为980 g的摆球中,摆线长度不可伸缩.子弹射入后开始与摆球一起运动的速率为( )m\u002Fs \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff121ade01a21aa993882f7fdd2375a94.png\">",{"answer":65,"createTime":56,"id":66,"options":67,"question":72,"source":31,"type":32},[],160463379,[68,69,70,71],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6ff2a6d0a7a799410e65d5e833476b37.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2cf6457d110566e72b87734cab436c6e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c32505b7976bf1c4fb3839f73c7a6e7.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdef697655c0f215c838c48f9b548f896.png\">","已知地球的质量为m,太阳的质量为M,地心与日心的距离为R,引力常数为G,则地球绕太阳作圆周运动的角动量为( )",{"answer":74,"createTime":56,"id":75,"options":76,"question":81,"source":31,"type":32},[],160463381,[77,78,79,80],"只有(1)是正确的","(1)、(2)是正确的","(1)、(3)是正确的","(2)、(3)是正确的","对质点系有以下说法:⑴质点系总动量的改变与内力无关.⑵质点系总动能的改变与内力无关.⑶质点系机械能的改变与保守内力无关.在上述说法中",{"answer":83,"createTime":56,"id":84,"options":85,"question":90,"source":31,"type":32},[],160463383,[86,87,88,89],"动量守恒,机械能守恒","动量不守恒,机械能守恒","动量不守恒,机械能不守恒","动量守恒,机械能不一定守恒","如图所示,质量分别为m1 和m2 的物体A 和B,置于光滑桌面上,A 和B 之间连有一轻弹簧.另有质量为m1 和m2 的物体C 和D 分别置于物体A 与B 之上,且物体A和C、B 和D 之间的摩擦因数均不为零.首先用外力沿水平方向相向推压,使弹簧被压缩,然后撤掉外力,则在A和B 弹开的过程中,对A、B、C、D 以及弹簧组成的系统,有: \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0680b0d0cf8b083af6b014e448516316.png\">",{"answer":92,"createTime":56,"id":93,"options":94,"question":99,"source":31,"type":32},[],160463385,[95,96,97,98],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2eadb2190c4ce8c40f2e82637781c409.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb0bdd185211331918d35713b050bf74f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F83f1529e3b0cc0a500f3c1395cfb0856.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa049c55f650484180ce53e932c3dd8fc.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F521db52745603134ad50456a76306f6b.jpg\"> \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2091d769086b5c799e56ffcbd0b62847.jpg\">",{"answer":101,"createTime":102,"id":103,"options":104,"question":109,"source":31,"type":32},[],"2024-09-28 20:36:02",160463387,[105,106,107,108],"物体所受冲量越大,动量就越大","作用力的冲量与反作用力的冲量等值反向","作用力的功与反作用力的功相加为0","物体的动量改变,物体的动能必定改变","以下几种说法正确的是( )"]