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8．如图所示粗糙的$frac{1}{4}$圆弧的半径为045m有一质量为02kg的物体自最高点a从静止开始下�到圆弧最低点b时然后 Template






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sketch 2639 Marilyn by sketchmaster
sketch 5153 Random Access Memories by Khin Nyunt
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sketch 2884 Robot Shimun Yeyo Ahmed

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tomski8．如图所示粗糙的$frac{1}{4}$圆弧的半径为045m有一质量为02kg的物体自最高点a从静止开始下�到圆弧最低点b时然后 coloring
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8．如图所示粗糙的$frac{1}{4}$圆弧的半径为045m有一质量为02kg的物体自最高点A从静止开始下到圆弧最低点B时然后 sketch template
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表面粗糙度新旧标准解读，表面粗糙度的标注方法学习 测量 sketch template
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一文搞懂：数控加工中的“刀具补偿” 知乎 sketch template
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如图所示表面粗糙的$frac{1}{4}$竖直圆弧轨AB固定在粗糙的水平轨轨道BC上两轨道在B处平连接切点B在圆心O的正下方．一小 sketch template
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如图所示为半径是r密度是ρ的某星球表面某处竖直平面内的一段轨道AB是倾角为θ的粗糙直轨道BCD是光的圆弧轨道AB恰好在B点与圆弧相切 sketch template
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如图所示BC 为半径等于$frac{2}{5}sqrt{2}$m竖直放置的光细圆管O为细圆管的圆心在圆管的末端C连接倾斜角为45 sketch template
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如图所示从光的$frac{1}{4}$圆弧槽的最高点下的小块出槽口时速度方为水平方槽口与一个半球顶点相切半球底面为水平 sketch template
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如图所示一粗糙斜面AB与光圆弧轨道BCD相切O为圆弧轨道的圆心OD处在同一水平面上C为圆弧轨道的最低点圆弧BC所对圆心角θ=37 sketch template
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如图所示固定的半圆弧形光轨道置于水平方的勻强电场和匀强磁场中轨道圆弧半径为R磁感应强度为B方垂直于纸面外电场强度为 sketch template
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如图所示是用闪照相的方法拍到的一个弹簧振子的振动情况甲图是振子静止在平衡位置时的照片乙图是振子被拉到左侧距平衡位置20cm处放手后右 sketch template
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如图所示在同一竖直平面内AB为光水平轨道的两端点其左端A固定一挡板轻质弹簧的左端固定在挡板上另一自由端被质量为m的小球压在P点处 sketch template
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如图所示一质量m=1kg的小物块从A点以大小v0=4m/s的初速度沿切线进入光圆弧轨道AB经圆弧轨道后上与B点等高静止在粗糙水平面的 sketch template
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29．如图所示使一薄钢条下端固定现分别用不同的力去推它使其生甲乙丙丁各图所示的形变如果F1=F3=F4&gtF2能说明力的作用 sketch template
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如图所示a为带正电的小物块b是一不带电的绝缘物块设 Ab间无电荷转移ab叠放于粗糙的水平地面上地面上方有垂直纸面里的匀强磁场 sketch template
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如图所示某物块从A点沿竖直光的$frac{1}{4}$圆弧轨道由静止开始下圆弧轨道的半径R=025m末端B点与水平传送带相切 sketch template
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如图所示甲、乙两个相同的圆台形容器以不同的方式放在水平桌面上容器内装有深度相同、质量相同、密度不同的A、B液体则两液体密度ρA > ρB sketch template
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如图所示两个用同种材料制成的圆柱体a和bb的横截面积是a的3倍将a竖直放在水平地面上b竖直放在a上如图甲所示这时a对地面的压强与b sketch template
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如图所示一质量m=02kg的物体从半径R=02m的光的$frac{1}{4}$圆弧的绝缘轨道上端由静止下到底端然后继续沿水平面 sketch template
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如图所示质量为m的物体在的水平力作用下沿倾角为q =30º的斜面上匀速运动根据力学规律和题中提供的信息你还能求得哪几个作用力及跟擦 sketch template
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如图所示物体在粗糙的水平面上受到一个与水平方成α角的拉力F的作用匀速右运动若拉力F的方与水平方所成的α角的减小物体仍匀速运动 sketch template
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如图所示粗糙的水平地面上放置一个四分之一圆弧槽其左端紧靠竖直墙壁在它与竖直墙壁之间放一光球整个装置处于静止状态若将圆弧槽右移动 sketch template
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如图所示一小球质量为m用长为L的细绳悬于O点在O点的正下方$frac{L}{2}$处钉有一根长钉把小球右拉离最低位置使悬线偏离 sketch template
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在半径为r电阻为R的圆形导线框内以直径为界左右两侧分别存在着方如图甲所示的匀强磁场．以垂直纸面里的磁场方为正两部分磁场的磁感应 sketch template
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如图所示一粗糙斜面AB与光圆弧轨道BCD相切O为圆弧轨道的圆心OD处在同一水平面上C为圆弧轨道的最低点圆弧BC所对圆心角θ=37 sketch template
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如图所示ABC为一透明材料制成的柱形光学元件的横截面该种材料的折射率n=$sqrt{3}$AC是一半径为R的$frac{1}{4 sketch template
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24．如图所示在倾角θ=37°的足够长的固定的斜面底端有一质量m=10kg的物体物体与斜面间动擦因数µ =025现用轻细绳将物体由 sketch template
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如图所示在水平地面上分别侧放和平放着完全相同的两块砖A和B．在砖B上面放有重力不计的薄壁容器 C．C中装有水密度为p水砖A和B的密度均为 sketch template
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如图所示气垫导轨上块经过光电门时其上的遮光条将光遮住电子计时器可自动记录遮光时间 T．测量遮光条的宽度为 X用$frac{ X sketch template
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如图所示半径R=10cm的半圆形玻璃砖放在水平桌面上O1为圆心O2为圆弧顶点P1P2面与桌面平行现让一很细的激光束垂直P1P2面射入 sketch template
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如图所示在一个直立的光管内放置一个轻质弹簧上端O点与管口A的距离为2x0一个质量为m带电量为 Q的光绝缘小球从管口由静止下落将 sketch template
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在轨道上稳定运行的空间站中有如图所示的装置半径分别为r和R的甲乙两个光的圆形轨道安置在同一竖直平面上轨道之间有一条水平轨道CD相通 sketch template