[err:数据源标签'PE.DataSource id="cone" datasource="资料_内容页" itemId="79671" xslt="true" '返回数据错,原因:名称不能以“ ”字符(十六进制值 0x20)开头。 行 45,位置 8。,源码:796713 <meta http-equiv="refresh" content="0;url=/Item/6883.aspx" /> /Item/6883.aspx <meta http-equiv="refresh" content="0;url=/Item/6883.aspx" /> 1864苏科版九年级期中模拟试卷及答案0.00B0.00Bdoc初中物理在线fanlijianczwlzx/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?id=79671"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=dayhits&id=79671"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=weekhits&id=79671"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=monthhits&id=79671"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetBrowseTimes.aspx?id=79671"></script> <img src="/images/star5.jpg" /> fanlijian 0 期中试题上传2007年11月12日/UploadFiles/nopic.gif 1.下面各图中属于省力杠杆的是 ( ) A.挖土的铁锹 B. 缝纫机脚踏板 C. 起子 D. 天平 2.如图所示,1.下面各图中属于省力杠杆的是 ( ) A.挖土的铁锹 B. 缝纫机脚踏板 C. 起子 D. 天平 2.如图所示,用一细线悬挂一根粗细均匀的轻质细麦桔杆,使其静止在水平方向上,O]为麦桔杆的中点.这时有两只大肚皮的蚂蚁同时从O点分别向着麦桔杆的两端匀速爬行,在蚂蚁爬行的过程中麦桔杆在水平方向始终保持乎衡,则( ) A.两蚂蚁的质量一定相等 B.两蚂蚁的爬行速度大小一定相等 C.两蚂蚁的质量与爬行速度大小的乘积一定相等 D.两蚂蚁对麦桔杆的压力一定相等 3.如图所示,在水平拉力F的作用下重100 N的物体A,沿水平桌面做匀速直线运 动,弹簧测力计B的示数为10 N,则物体A与水平桌面的摩擦力大小为 ( ) A.100N B.50N C. 20N D. 【内容简介】1.下面各图中属于省力杠杆的是 ( ) A.挖土的铁锹 B. 缝纫机脚踏板 C. 起子 D. 天平 2.如图所示,用一细线悬挂一根粗细均匀的轻质细麦桔杆,使其静止在水平方向上,O]为麦桔杆的中点.这时有两只大肚皮的蚂蚁同时从O点分别向着麦桔杆的两端匀速爬行,在蚂蚁爬行的过程中麦桔杆在水平方向始终保持乎衡,则( ) A.两蚂蚁的质量一定相等 B.两蚂蚁的爬行速度大小一定相等 C.两蚂蚁的质量与爬行速度大小的乘积一定相等 D.两蚂蚁对麦桔杆的压力一定相等 3.如图所示,在水平拉力F的作用下重100 N的物体A,沿水平桌面做匀速直线运 动,弹簧测力计B的示数为10 N,则物体A与水平桌面的摩擦力大小为 ( ) A.100N B.50N C. 20N D.10N 第3题 第4题 第6题 4.如图所示,小明分别用甲、乙两个滑轮把同一袋沙子从地面提到二楼,用甲滑轮所做的总功为W1,机械效率为η1;用乙滑轮所做的总功为W2,机械效率为η2。若不计绳重与摩擦,则 ( ) A.W1 = W2,η1 =η2 B. W1 = W2,η1 <η2> C. W1 < W2,η1 >η2 D. W1 > W2,η1 <η2> 5.周末小华来到常州动漫基地参观,他选择了一架可以调速的升降电梯。他将速度设定为0.5m/s从一楼来到二楼,再将速度设定为1m/s从二楼来到三楼,那么两次电梯( ) A.第一次做的功多,功率大 B.第二次做的功多,功率大 .............. ? ? ?1.下面各图中属于省力杠杆的是 ( ) A.挖土的铁锹 B. 缝纫机脚踏板 C. 起子 D. 天平 2.如图所示,用一细线悬挂一根粗细均匀的轻质细麦桔杆,使其静止在下载地址1|stzx_UploadFiles_64/200711/20071112070517452.rar<p>1.下面各图中属于省力杠杆的是 ( )<br /> A.挖土的铁锹 B. 缝纫机脚踏板 C. 起子 D. 天平<br /> 2.如图所示,用一细线悬挂一根粗细均匀的轻质细麦桔杆,使其静止在水平方向上,O]为麦桔杆的中点.这时有两只大肚皮的蚂蚁同时从O点分别向着麦桔杆的两端匀速爬行,在蚂蚁爬行的过程中麦桔杆在水平方向始终保持乎衡,则( )<br /> A.两蚂蚁的质量一定相等<br /> B.两蚂蚁的爬行速度大小一定相等<br /> C.两蚂蚁的质量与爬行速度大小的乘积一定相等<br /> D.两蚂蚁对麦桔杆的压力一定相等<br /> 3.如图所示,在水平拉力F的作用下重100 N的物体A,沿水平桌面做匀速直线运<br /> 动,弹簧测力计B的示数为10 N,则物体A与水平桌面的摩擦力大小为 ( )<br /> A.100N B.50N C. 20N D.10N<br /><br /> 第3题 第4题 第6题<br /> 4.如图所示,小明分别用甲、乙两个滑轮把同一袋沙子从地面提到二楼,用甲滑轮所做的总功为W1,机械效率为η1;用乙滑轮所做的总功为W2,机械效率为η2。若不计绳重与摩擦,则 ( )<br /> A.W1 = W2,η1 =η2 B. W1 = W2,η1 &lt;η2&gt;<br /> C. W1 &lt; W2,η1 &gt;η2 D. W1 &gt; W2,η1 &lt;η2&gt;<br /> 5.周末小华来到常州动漫基地参观,他选择了一架可以调速的升降电梯。他将速度设定为0.5m/s从一楼来到二楼,再将速度设定为1m/s从二楼来到三楼,那么两次电梯( )<br /> A.第一次做的功多,功率大 B.第二次做的功多,功率大<br /> ..............</p> <p>?</p> <p>?</p> <p>?</p>苏科版不限试题试卷专供vip会员doc <img src="/images/nopic.gif" alt="%e8%8b%8f%e7%a7%91%e7%89%88%e4%b9%9d%e5%b9%b4%e7%ba%a7%e6%9c%9f%e4%b8%ad%e6%a8%a1%e6%8b%9f%e8%af%95%e5%8d%b7%e5%8f%8a%e7%ad%94%e6%a1%88" border="0" /> /UploadFiles/stzx_UploadFiles_64/200711/20071112070517452.rar <script type="text/javascript" src="/cuplayer4/js/swfobject.js"></script> <div class="video" id="CuPlayer"><b><img src="/cuplayer4/images/loading.gif" /> 网页视频播放器加载中,请稍后...<a href="http://www.cuplayer.com/cuplayer" target="_blank">点此升级>></a></b></div> <script type="text/javascript"> var so = new SWFObject("/cuplayer4/player.swf","myCuPlayer","940","465","9","#000000"); so.addParam("allowfullscreen","true"); so.addParam("allowscriptaccess","always"); so.addParam("wmode","opaque"); so.addParam("quality","high"); so.addParam("salign","lt"); so.addVariable("JcScpAutoPlay","no"); //是否自动播放 so.addVariable("JcScpShowRightmenu","no"); // so.addVariable("JcScpVideoPath","/UploadFiles/stzx_UploadFiles_64/200711/20071112070517452.rar"); //视频文件地址 so.addVariable("JcScpImg","");//视频缩略图 so.addVariable("JcScpSharetitle","酷播V4.0(CuPlayerV4.0)版使用官方演示实例"); so.write("CuPlayer"); </script> <script language=javascript src="/cuplayer4/js/action.js" type=text/javascript></script> <script type="text/javascript" src="/cuplayer3/images/swfobject.js"></script> <div class="video" id="CuPlayer"><b><img src="/cuplayer3/images/loading.gif" /> 网页视频播放器加载中,请稍后...<a href="http://www.cuplayer.com/cuplayer" target="_blank">点此升级>></a></b></div> <script type="text/javascript"> var so = new SWFObject("/cuplayer3/CuPlayerMiniV3_Black_S.swf","myCuPlayer","862","485","9","#000000"); so.addParam("allowfullscreen","true"); so.addParam("allowscriptaccess","always"); so.addParam("wmode","opaque"); so.addParam("quality","high"); so.addParam("salign","lt"); so.addVariable("CuPlayerFile","/UploadFiles/stzx_UploadFiles_64/200711/20071112070517452.rar"); //视频文件地址 so.addVariable("CuPlayerImage","");//视频缩略图 so.addVariable("CuPlayerShowImage","true"); so.addVariable("CuPlayerWidth","862"); so.addVariable("CuPlayerHeight","485"); so.addVariable("CuPlayerAutoPlay","false"); so.addVariable("CuPlayerAutoRepeat","true"); so.addVariable("CuPlayerShowControl","true"); so.addVariable("CuPlayerAutoHideControl","false"); so.addVariable("CuPlayerAutoHideTime","6"); so.addVariable("CuPlayerVolume","80"); so.addVariable("CuPlayerGetNext","false"); so.write("CuPlayer"); </script> <script language=javascript src="/cuplayer4/js/action.js" type=text/javascript></script> ] {PE.Field id="cone" fieldname="Title" /}-初中物理在线 {PE.Field id="cone" fieldname="gourl" /} {PE.Label id="顶部" currentId="{PE.Field id="cone" fieldname="NodeID" /}"/}

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