[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$feNriFXFgNEcAS2zCY7qqtK4dynvGEeSxZ_RJzfJ0PYI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-04-18 21:42:28",183592289,[8,9,10,11],"5%","10%","15%","20%",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},427,"93a5eda7a98577777ceec8489b590e7c","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3d3abe610d582d562e2b7c7b7576391a.jpg","大学物理","exam_152687785","自测3","一热机,在500K和300K的两热源之间进行卡诺循环.如果将高温热源温度提高到600K,则理论上的热机效率增加( )",[21,33,42,51,60,63,72,82,92,102],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-04-18 21:42:27",183592285,[26,27,28,29],"0","100J","-100J","求不出(因不知过程可逆与否)","1mol单原子分子理想气体,经过一个循环过程,做功W为-100J,则Q为()","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],183592286,[37,38,39,40],"在液体的表面层,分子间距大,分子之间斥力消失、只有引力","由于气体分子对表面层液体分子的吸引","在液体的表面层里由于分子间距比液体内部大,分子间引力占优势","由于受到指向液外的斥力的作用","液体表面张力产生的 原因是( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],183592287,[46,47,48,49],"分波阵面法双光束干涉","分振幅法双光束干涉","分波阵面法多光束干涉","分振幅法多光束干涉","杨氏双缝干涉实验是",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":31,"type":32},[],183592288,[55,56,57,58],"可以的, 符合热力学第一定律","可以的, 符合热力学第二定律","不行的, 卡诺循环所作的功不能大于向低温热源放出的热量","不行的, 这个热机的效率超过了理论值","有人设计了一台卡诺热机(可逆的).每循环一次可从400K的高温热源吸收1800J的热量, 向300K的低温热源放热800J, 同时对外作功1000J.这样的设计是( )",{"answer":61,"createTime":5,"id":6,"options":62,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":64,"createTime":5,"id":65,"options":66,"question":71,"source":31,"type":32},[],183592290,[67,68,69,70],"光的传播周期变小","光的振动频率变快","折射光位相突变π","反射光位相突变π","光从光疏介质射入光密介质,以下正确的是( )",{"answer":73,"createTime":74,"id":75,"options":76,"question":81,"source":31,"type":32},[],"2025-04-18 21:42:29",183592291,[77,78,79,80],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5706ee66ce5d08303aa2064ce704caff.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4e9cb858aced4f24a3f3853549437245.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8878f7d12e4781e70fbf83af68447e5d.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff505dac3f24d99e26bd2e4c7f9dccabb.png\">","一质点沿x方向运动,其加速度随时间变化关系为 a= 3+2t (SI), 如果初始时质点的速度v0为5 m\u002Fs,则当t为2s时,质点的速度v 为( )",{"answer":83,"createTime":84,"id":85,"options":86,"question":91,"source":31,"type":32},[],"2025-04-18 21:42:30",183592292,[87,88,89,90],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc1f169294861ac20183dc127761364ab.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5dc0a085f16cf168cac09815de6b9599.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd1e85ba085d62d8c9e6a8cc0da9be0b1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fddc72d8c24a4692a0b6f86ca742d3ba2.png\">","一质点沿\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff07cd42baba1b083e3b418ada6c98f64.png\">轴作直线运动,其运动学方程为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F95ba94a50e403959181472d8866441b1.png\">,则质点在t=3.0 s时的加速度大小为( )",{"answer":93,"createTime":94,"id":95,"options":96,"question":101,"source":31,"type":32},[],"2025-04-18 21:42:31",183592293,[97,98,99,100],"波动方程是关于时间t和位置x的函数","当时间t一定时,波动方程可以反映出某点的振动规律","若波沿x轴正向传播,则右侧质元的振动超前于左侧质元的振动","波动传播方向对波动方程无影响","关于波动方程,下列说法中正确的是",{"answer":103,"createTime":94,"id":104,"options":105,"question":110,"source":31,"type":32},[],183592294,[106,107,108,109],"a=6t, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffbdc9b8887d31488cf19796d81a60ab1.png\">","a=6t, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff894f7d14040185546d7bcfa8185e934.png\">","a=t, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff894f7d14040185546d7bcfa8185e934.png\">","a=6t,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F755aef7da0746a0a1280972e734b8f76.png\">","一质点沿\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5a0be587bcd8137c0bd3db42002ae9af.png\">轴运动, \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fda630b10a386d29ae7b6fa8b1ec43a3a.png\">(SI), 若t=0时,质点位于原点.则质点的加速度和运动方程分别为( )"]