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2218上海市华育中学2019-2020学年第一学期九年级物理期末测验试题(含答案)210.33KB210.33Bdocxczwlzx上海市华育中学czwlzx/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg
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上海市华育中学1上海市华育中学,2019-2020学年第一学期九年级物理期末测验试题2020年01月21日/UploadFiles/nopic.gif
1、如图所示,放在水平地面上的均匀正方体甲、乙对地面的压力相等,若在两物体上部沿水平方向切去一定的厚1、如图所示,放在水平地面上的均匀正方体甲、乙对地面的压力相等,若在两物体上部沿水平方向切去一定的厚度,使剩余部分的高度相等,则剩余部分对地面的压力F甲’和F乙’、压强p甲’和p乙’的关系是( )A. F甲’ >F乙',p甲’>p乙’ B. F甲’ =F乙',p甲’=p乙’C. F甲’<F乙',p甲’ <p乙’ D. F甲’ =F乙',p甲’>p乙’2、如图所示电路,电源电压不变,闭合电键S后,灯L1、L2都发光。一段时间后,其中一盏灯突然变亮,面电压表V1与电压表V2示数相等,则( )A. L1一定断路 B.L1一
【内容简介】1、如图所示,放在水平地面上的均匀正方体甲、乙对地面的压力相等,若在两物体上部沿水平方向切去一定的厚度,使剩余部分的高度相等,则剩余部分对地面的压力F甲’和F乙’、压强p甲’和p乙’的关系是( )A. F甲’ >F乙',p甲’>p乙’ B. F甲’ =F乙',p甲’=p乙’C. F甲’p乙’2、如图所示电路,电源电压不变,闭合电键S后,灯L1、L2都发光。一段时间后,其中一盏灯突然变亮,面电压表V1与电压表V2示数相等,则( )A. L1一定断路 B.L1一定短路C. L2一定断路 D. L2可能短路3、有一不吸水木球,其质量为10g,体积为20cm3,先把它轻轻放入盛满水的溢水杯中。当木球球静止时,溢出水的质量为10g;把它取出擦干,再轻轻放入盛满煤油的溢水杯中,当木球静止时,溢出煤油的质量是(煤油的密度是0.8g/cm3)( )A. 5g B. 8g C.10g D. 16g4、学习电学知识后,物理兴趣小组对亮度可调的应急灯进行了探究,发现它的亮度调节开关相当于一个滑动变阻器,电路如图所示。闭合开关,用电压表和电流表对其进行测量,调节滑动变阻器使灯泡变亮的过程中,电压表和电流表的示数变化情况是(电源电压保持不变)( )A.电流表A的示数变小 B.电压表V1的示数变大C.电压表V1的示数变小 D.电压表V2的示数不变5.在如图所示的电路中,电源电压和灯泡电阻都保持不变,当滑动变阻器R的滑片 P 由中点向右移动时,下列判断中正确的是( )A. 电流表和电压表的示数都增大B.电流表和电压表的示数都减小C.电流表的示数减小,电压表的示数增大1、如图所示,放在水平地面上的均匀正方体甲、乙对地面的压力相等,若在两物体上部沿水平方向切去一定的厚度,使剩余部分的高度相等,则剩余部分对地面的压力F甲
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下载地址1|sj/2020/1/2020121115227.docx<p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:22px;margin-bottom:0;line-height:120%"><img width=" 132px" height=" 61px" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/lang/zh-cn/images/localimage.png) no-repeat center center;border:1px solid #ddd" /><span style="font-family:'Times New Roman','serif'">1</span><span style="font-family:宋体">、如图所示,放在水平地面上的均匀正方体甲、乙对地面的压力相等,若在两物体上部沿水平方向切去一定的厚度,使剩余部分的高度相等,则剩余部分对地面的压力</span><span style="font-family:'Times New Roman','serif'">F</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’</span><span style="font-family:宋体">和</span><span style="font-family:'Times New Roman','serif'">F</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’</span><span style="font-family:宋体">、压强</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’</span><span style="font-family:宋体">和</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’</span><span style="font-family:宋体">的关系是(</span><span style="font-family:'Times New Roman','serif'"> </span><span style="font-family:宋体">)</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">A. F</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’ >F</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">'</span><span style="font-family:宋体">,</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’>p</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’ B. F</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’ =F</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">'</span><span style="font-family:宋体">,</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’=p</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><img width=" 148px" height=" 128px" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/lang/zh-cn/images/localimage.png) no-repeat center center;border:1px solid #ddd" /><span style="font-family:'Times New Roman','serif'">C. F</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’<F</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">'</span><span style="font-family:宋体">,</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’ <p</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’ D. F</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’ =F</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">'</span><span style="font-family:宋体">,</span><span style="font-family:'Times New Roman','serif'">p</span><sub><span style="font-family:宋体">甲</span></sub><span style="font-family:'Times New Roman','serif'">’>p</span><sub><span style="font-family:宋体">乙</span></sub><span style="font-family:'Times New Roman','serif'">’</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:22px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">2</span><span style="font-family:宋体">、如图所示电路,电源电压不变,闭合电键</span><span style="font-family: 'Times New Roman','serif'">S</span><span style="font-family:宋体">后,灯</span><span style="font-family:'Times New Roman','serif'">L<sub>1</sub></span><span style="font-family:宋体">、</span><span style="font-family:'Times New Roman','serif'">L<sub>2</sub></span><span style="font-family:宋体">都发光。一段时间后,其中一盏灯突然变亮,面电压表</span><span style="font-family:'Times New Roman','serif'">V<sub>1</sub></span><span style="font-family:宋体">与电压表</span><span style="font-family:'Times New Roman','serif'">V<sub>2</sub></span><span style="font-family:宋体">示数相等,则(</span><span style="font-family:'Times New Roman','serif'"> </span><span style="font-family:宋体">)</span><span style="font-family:'Times New Roman','serif'"></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">A. L<sub>1</sub></span><span style="font-family: 宋体">一定断路</span><span style="font-family:'Times New Roman','serif'"> B.L<sub>1</sub></span><span style="font-family:宋体">一定短路</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">C. L<sub>2</sub></span><span style="font-family: 宋体">一定断路</span><span style="font-family:'Times New Roman','serif'"> D. L<sub>2</sub></span><span style="font-family:宋体">可能短路</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:22px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">3</span><span style="font-family:宋体">、有一不吸水木球,其质量为</span><span style="font-family: 'Times New Roman','serif'">10g</span><span style="font-family:宋体">,体积为</span><span style="font-family:'Times New Roman','serif'">20cm<sup>3</sup></span><span style="font-family:宋体">,先把它轻轻放入盛满水的溢水杯中。当木球球静止时,溢出水的质量为</span><span style="font-family:'Times New Roman','serif'">10g</span><span style="font-family:宋体">;把它取出擦干,再轻轻放入盛满煤油的溢水杯中,当木球静止时,溢出煤油的质量是(煤油的密度是</span><span style="font-family:'Times New Roman','serif'">0.8g/cm<sup>3</sup></span><span style="font-family:宋体">)</span><span style="font-family:宋体">(</span><span style="font-family:'Times New Roman','serif'"> </span><span style="font-family: 宋体">)</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">A. 5g B. 8g C.10g D. 16g</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:22px;margin-bottom:0;line-height:120%"><img width=" 124px" height=" 80px" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd" /><span style="font-family:'Times New Roman','serif'">4</span><span style="font-family:宋体">、学习电学知识后,物理兴趣小组对亮度可调的应急灯进行了探究,发现它的亮度调节开关相当于一个滑动变阻器,电路如图所示。闭合开关,用电压表和电流表对其进行测量,调节滑动变阻器使灯泡变亮的过程中,电压表和电流表的示数变化情况是(电源电压保持不变)(</span><span style="font-family:'Times New Roman','serif'"> </span><span style="font-family:宋体">)</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">A.</span><span style="font-family:宋体">电流表</span><span style="font-family:'Times New Roman','serif'">A</span><span style="font-family:宋体">的示数变小</span><span style="font-family:'Times New Roman','serif'"> B.</span><span style="font-family:宋体">电压表</span><span style="font-family:'Times New Roman','serif'">V<sub>1</sub></span><span style="font-family:宋体">的示数变大</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">C.</span><span style="font-family:宋体">电压表</span><span style="font-family:'Times New Roman','serif'">V<sub>1</sub></span><span style="font-family:宋体">的示数变小</span><span style="font-family: 'Times New Roman','serif'"> D.</span><span style="font-family:宋体">电压表</span><span style="font-family:'Times New Roman','serif'">V<sub>2</sub></span><span style="font-family:宋体">的示数不变</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:22px;margin-bottom:0;line-height:120%"><img width=" 154px" height=" 87px" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" style="background:url(http://www.czwlzx.com/UEditor/lang/zh-cn/images/localimage.png) no-repeat center center;border:1px solid #ddd" /><span style="font-family:'Times New Roman','serif'">5</span><span style="font-family:宋体">.在如图所示的电路中,电源电压和灯泡电阻都保持不变,当滑动变阻器</span><span style="font-family:'Times New Roman','serif'">R</span><span style="font-family:宋体">的滑片</span><span style="font-family:'Times New Roman','serif'"> P </span><span style="font-family:宋体">由中点向右移动时,下列判断中正确的是</span><span style="font-family:宋体">(</span><span style="font-family:'Times New Roman','serif'"> </span><span style="font-family:宋体">)</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">A. </span><span style="font-family:宋体">电流表和电压表的示数都增大</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">B.</span><span style="font-family:宋体">电流表和电压表的示数都减小</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:44px;margin-bottom:0;line-height:120%"><span style="font-family:'Times New Roman','serif'">C.</span><span style="font-family:宋体">电流表的示数减小,电压表的示数增大</span></p><p><br /></p>其它版上海试题试卷专供vip会员docx
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{PE.Label id="A评论标签" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /}
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