如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 Sketch Coloring Page

如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 Template

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tomski如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 coloring

如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 sketch template

从宋代《天工开物》看古代�技与力学的相互影响知乎 sketch template

如图所示是古人锻造铁器的过程关于改变物体内能的方式下列说法中正确的是 A 加热和锻打属于热传递淬火属于做功 B 加热属于热传递 sketch template

如图16所示是古书《天工开物》中描述人们用舂chong来捣谷时的情景。若在A点悬挂的物重为60NOAOB=43则捣谷人在B点至�需 sketch template

如图所示是古代入撬石头时的示意图请在图中画出力F对支点O的力臂并用字母L标明．题目和参考答案——青夏教育精英家教�—— sketch template

7．桔槔是�国古代劳动人�在生产实践中�明创造的一种巧妙地运用杠杆原理的提水工具．如图所示设配重A重30NCODO=21木桶重20N sketch template

在�国古代书籍中对杠杆有精辟论述并有许多巧妙的应用．如图所示是在井上汲水的桔槔下列对其在使用中不正确的解释是 A．桔槔是等臂杠杆不 sketch template

如图甲所示，桔槔是�国古代汲水的一种器具，可看作杠杆，图乙是其简化示意图。请在图乙的A点中作出水桶所受重力G的示意图，并画出力F1的力臂l1。 sketch template

百度教育 sketch template

如图凸透镜放置在水面上方主光轴与水面重合A为焦点现水面上方点光源S�出一条光线SA在水面即�生了反射又�生了折射请补全光路．——青夏 sketch template

如图所示小柯积极参加体育锻炼．1图甲所示为小柯初学俯卧�时的姿势图乙所示为他经练习后的俯卧�姿势．图乙中小柯双手所受的支持力＞＞图甲的 sketch template

如图所示甲乙两人将一木箱从一楼抬上三楼甲对木箱做的功 乙对木箱做的功填“大于 “等于或“小于．题目和参考答案——青夏教育精英 sketch template

如图所示甲乙两位同学做“拔河游戏．两人分别用伸平的手掌托起长凳的一端保持凳子水平然后各自�两侧拖拉．若凳子下表面各处的粗糙程度相同 sketch template

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12．如图甲所示在x轴上有一个点电荷QOAB为轴上三点放在AB两点的检验电荷受到的电场力跟检验电荷所带电荷量的关系如图5乙 sketch template

如图所示甲乙两图都是用来“验证机械能守恒定律 的装置示意图已知该打点计时器的打点�率为50Hz．重力加速度为g1甲乙两图相比较 图 sketch template

如图所示甲乙两个物块分别系在一条跨过定�轮的轻绳两端已知甲的质量为300g乙的质量为100g不计�擦g取10m/s2则甲乙运动 sketch template

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如图甲所示大力士扭不过“小不点说明力的作用效果与力的 有关．如图乙所示同样大的力结果却“背道而驰说明力的作用效果还与力的 有关 sketch template

如图甲所示，用刻度尺测量一物体的长度，物体的长度为cm；如图乙所示，图中是分度值为01s的机械秒表，其示数是s。 sketch template

如图甲所示一质量为m =1kg的小物块静止在粗糙水平面上的A点从t = 0时刻开始物体在受如图乙所示规律变化的水平力F作用下�右运动第 sketch template

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题目在探究“杠杆的平衡条件 的实验中1如图甲所示为使杠杆在水平位置平衡应将杠杆右端的平衡螺母� 旋选填“左“或“右．2 sketch template

在如图所示中O是杠杆的支点试画出F1和F2的力臂L1和L2．——青夏教育精英家教�—— sketch template

如图甲所示人的手臂相当于一个杠杆它的支点在O点．请你画出图中铅球对手的作用力F的力臂L如图乙所示重为G的木箱A静止在斜面上请作出木箱 sketch template

如图甲所示为一列沿水平方�传播的简谐横波在t＝0时的波形图图乙是这列波中质点p的振动图线下列说法正确的是 A．该波的波长为15mB．该 sketch template

如图所示实验AB为两个质量相同形状不同的实心铁块选用图甲与图乙可以研究物体所受浮力大小与 的关系为了研究物体所受浮力大小与其浸没在 sketch template

百度教育 sketch template

如图甲所示杠杆AB能绕固定点O在竖直平面内转动水平地面上的配重乙通过细绳竖直拉着杠杆B端．已知AOOB=25配重乙与地面的接触面积为 sketch template

小李在“探究物质熔化规律”实验中，所用装置如图甲所示。�在安装器材时应按照选填（“从上到下”或“从下到上”）的顺序安装器材；�从图乙可知物质在 sketch template

百度教育 sketch template

如图甲所示，小童在�上看到一个神奇的实验，利用四个梯形的�料片，围成一圈立在手机上，就可以将手机上的影像成在空中，形成具有“3D”效果的“全息 sketch template

如图a所示同种材料制成的甲乙两个正立方体放在水平桌面上甲乙两物体对桌面的压强分别为18帕和10帕则对桌面压力较大的为 如果把 sketch template

小敏用如图甲所示的电路图研究通过导体的电流与导体电阻的关系电源电压恒为6V改变电阻R的阻值调节�动变阻器�片保持R两端的电压不变记 sketch template

如图是甲乙两种物质的溶解度曲线．下列说法中正确的是 A．甲的溶解度大于乙的溶解度B．t1℃时50g甲的饱和溶液中有15g甲C．t2℃时 sketch template

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