[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f_UIoZwba2tjmVJFMh3B6n2OnPW_ITLZeFOHBOIObZak":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":28},[],"2024-10-24 19:43:47",162985183,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},22,"0d429c6676856f18084f391a8cee99fd","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","（24年秋）大学物理（二）","2a3e64f0f07f4f9ca5cfbc16f93d33f7","作业11.8","两列波叠加,产生驻波的条件:振幅相等、沿同一直线相反方向传播的两列相干波",[17,29,38,47,53,62,71,76,79,85],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2023-05-10 17:26:01",4178016,[22,23,24,25],"r2-r1=(2k+1)&lambda;\u002F2","&phi;20-&phi;10=(2k+1)&pi;","&phi;20-&phi;10-2&pi;(r2-r1)\u002F&lambda;=(2k+1)&pi;","&phi;20-&phi;10-2&pi;(r1-r2)\u002F&lambda;=(2k+1)&pi;","如图所示,波长为&lambda;的两列相干波在P点相遇.一波在S1点振动的初相是&phi;10,S1到P点的距离是r1;另一波在S2点振动的初相是&phi;20,S2到P点的距离是r2,以k代表零或正、负整数,则P点是干涉极小的条件为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe5118a968621057203590baed6b1efaf.jpg\">","v1",0,{"answer":30,"createTime":19,"id":31,"options":32,"question":37,"source":27,"type":28},[],4178017,[33,34,35,36],"振幅不同,相位相同","振幅相同,相位相同","振幅相同,相位不同","振幅不同,相位不同","在驻波中,两个相邻波节之间各质点的振动",{"answer":39,"createTime":19,"id":40,"options":41,"question":46,"source":27,"type":28},[],4178018,[42,43,44,45],"0","0.5&pi;","&pi;","无法确定","某时刻驻波波形曲线如图所示,则a、b两点振动的相位差为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F989981237180e0a45818b508f4fe94e1.jpg\">",{"answer":48,"createTime":19,"id":49,"options":50,"question":52,"source":27,"type":28},[],4178019,[42,43,44,51],"1.5&pi;","如图所示,两相干波源S1和S2相距0.5cm,S1的相位比S2的相位超前0.5&pi;.在S1和S2的连线上,S1外侧P点处,两波引起的两谐振动的相位差为(波长2.0cm)\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe5119041693302cdc60e44d26ace6e04.jpg\">",{"answer":54,"createTime":19,"id":55,"options":56,"question":61,"source":27,"type":28},[],4178020,[57,58,59,60],"A","2Acos(&omega;x\u002Fu)","2A","|2Acos(&omega;x\u002Fu)|","沿相反方向传播的两列相干波,其表达式分别为y1=Acos&omega;(t-x\u002Fu),y2=Acos&omega;(t+x\u002Fu)两波相干叠加后,各处质点简谐振动的振幅等于",{"answer":63,"createTime":19,"id":64,"options":65,"question":70,"source":27,"type":28},[],4178021,[66,67,68,69],"四分之一波长","二分之一波长","四分之三波长","一倍波长","在驻波中,两个相邻波腹之间的距离为",{"answer":72,"createTime":19,"id":73,"options":74,"question":75,"source":27,"type":28},[],4178022,[66,67,68,69],"在驻波中,两个相邻波节之间的距离为",{"answer":77,"createTime":5,"id":6,"options":78,"question":15,"source":27,"type":28},[],[],{"answer":80,"createTime":81,"id":82,"options":83,"question":84,"source":27,"type":28},[],"2024-10-24 19:43:48",162985188,[],"一驻波的表达式为y=0.1cos(2&pi;x)cos(50&pi;t)(SI).两个相邻波腹之间的距离是____m",{"answer":86,"createTime":81,"id":87,"options":88,"question":89,"source":27,"type":28},[],162985190,[],"波的干涉条件:振动方向_________,振动频率__________,相位差_________"]