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1、浮力【教学目标】1.认识浮力的性质，掌握浮力的计算；2.掌握影响浮力大小的各个因素。【教学重点】1.认识物体的沉浮条件，掌握决定物体沉浮的决定因素；2.掌握浮力的比值问题的解题方法。【教学难点】1.掌握浮力的比值问题的解题方法。【进门得分】1.(多选)如图,向一个质量可以忽略不计的塑料瓶中装入密度为A的液体后密闭,把它分别放在盛有密度为甲和乙两种液体的容器中,所受浮力分别为F甲和 F乙,下列判断正确的是(）A.甲大于乙 F甲大于 F乙B.甲小于乙 F甲等于 F乙C.甲大于乙乙小于AD.甲小于乙乙大于A2.如图甲所示,边长为 10cm的立方体木块A通过细线与圆柱形容器底部相连,容器中液面与 A
2、上表面齐平,从打开容器底部的抽液机匀速向外排液开始计时,细线中拉力F 随时间t的变化图像如图乙所示,木块密度=0.5 103kg/m3,容器底部面积为200cm2,g=10N/kg.下列说法中正确的是()A.随着液体的排出,木块受到的浮力不断减小B.容器中的液体是酒精C.抽液机每秒钟排出液体的质量是10g D.第 30s 时,木块露出液面的高度是2cm【教学内容】一、浮力的定义定义：一切浸在液体或气体中的物体都受到液体或气体竖直向上的托力叫做浮力二、物体的浮与沉1.物体浮与沉的直接原因取决于物体所受的重力与所受的浮力的大小关系,浸入水中的物体:(1)当 F浮G物时,物体将上浮,直到最终漂浮在液
3、面上,F浮=G物；(2)当 F浮=G物时,物体将悬浮于液体中；(3)当 F浮”、“”或“=”）；当潜水艇水舱充水时,潜水艇将(选填“上浮”、“下沉”或“悬浮”)。命题点2 浮力的相关计算5.(2016 南京 9题 2分)用手将一个密度为0.9 103kg/m3的实心小球先后浸没在水和酒精中.松手后,小球静止时,排开水和酒精的体积分别为V1和 V2,小球在水和酒精中所受的浮力分别为 F1和 F2,以下判断正确的是(酒精=0.8 103kg/m3)（）A.V1:V2=1:1 F1:F2=5:4 B.V1:V2=4:5 F1:F2=1:1 C.V1:V2=9:10 F1:F2=9:8 D.V1:V2
4、=8:9 F1:F2=10:9 6.(2016天水 6 题 3 分)弹簧测力计下挂一长方体物体,将物体从盛有适量水的烧杯上方离水面某一高度处缓级下降,然后将其逐渐浸入水中如图甲；图乙是弹簧测力计示数F 与物体下降高度 h 变化关系的图像则下列说法中正确的是(g 取 10N/kg)（）A.物体的体积是500cm3 B.物体受到的最大浮力是5N C.物体的密度是2.25 103kg/m3 D.物体刚浸没时下表面受到水的压力是9N 文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:
5、CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B
6、8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:
7、CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B
8、8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:
9、CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B
10、8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:
11、CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B17.(2016菏泽 13 题 2 分)新旧两只鸡蛋放入水中的状态如图所示，两只鸡蛋的体积分别是VA、VB,质量分别是mA、mB,两只鸡蛋受到的浮力分别为:FA=_，FB=_(已知水的密度为)8.(2016泰州 19 题 4 分)小明用细线系住重为5N的物体,使其一半体积浸入盛满水的溢水杯中,物体排开的水重为2N,此时物体所受的浮力为_N，将物体浸没在水中,此时物体所受的浮力为 _N,物体排开水的体积为_m3,松手后,物体将 _(选填“上浮”、“悬浮”或“下沉”)(g 取 10N/kg)9.取一只空牙膏皮,一次将它挤瘪,一次将
12、它撑开，两次都拧紧盖后先后放入一杯水中，如图所示两次牙膏皮的质量m甲和 m乙的大小关系为m甲_m乙；两次所受的浮力F甲和 F乙的大小关系为F甲_F乙；两次杯底受到水的压强p甲和 P乙的大小关系为P甲_P乙(均选填“大于”、“小于”或“等于”)10.(2016 无锡 22 题 2 分)将一物块A轻轻放入盛满水的大烧杯中,A 静止后有 72g 的水溢出；再将其轻轻放人盛满酒精的大烧杯中,A 静止后,有 64g 的酒精溢出.则 A 在水中静止时受到的浮力为 _N,A 的体积是 _cm3(酒精的密度是0.8 103kg/m3,g 取 10N/kg)11.(2016 兰州 35 题 6 分)如图所示,正
13、方体 A的边长为 10cm,在它的上面放一个重为2N的物文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7
14、V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5
15、F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7
16、V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5
17、F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7
18、V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5
19、F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1体 B,此时正方体A恰好没入水中,已知 g=10N/kg,水=1.0 103kg/m3,求:(1)正方体 A受到浮力的大小；(2)正方体 A的密度命题点3 探究浮力的大小跟哪些因素有关12.(2016 临沂 32 题 5 分)某物理兴趣小组做了如图所示的实验来探究影响浮力大小的因素(1)物体浸没在水中时
20、受到的浮力是_N，方向为 _(2)物体浸没在酒精中时排开酒精的重力是_N(3)比较两幅图可知,浸没在液体中的物体所受浮力的大小与液体的密度有关(4)由 ABCD 四个步骤可知,浮力的大小有时与深度有关,有时又与深度无关，对此正确的解释是浮力的大小与_有关。命题点4 探究浮力的大小跟排开液体所受重力的关系文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
21、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2
22、Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
23、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2
24、Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
25、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2
26、Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B113.(2016广东 18 题 7 分)如图甲所示,A、
27、B、C、D、E是“探究浮力大小跟排开液体所受重力的关系”实验的五个步骤（1)_ 两步骤可计算出圆柱体物块浸没在水中时受到的浮力F浮=_N，_两步骤可得出物块排开水所受的重力G排。比较 F浮与 G排可以得到浮力的大小跟物块排开水所受重力的关系(2)如图乙所示是圆柱体物块从水面缓慢浸入水中时,根据实验数据描绘出弹簧测力计示数F 随物块浸入深度h 变化的关系图像分析图像可得:当物块没有浸没之前,h增大时,弹簧测力计示数_(选填“变大”、“变小”或“不变”)，当 h=4cm时,物块所受的浮力为_N；浸没后,h 继续增大时,弹簧测力计示数为_N,该圆柱体物块的高度是_cm.【拓展训练】命题点4 浮力比值
28、问题及动态分析14、弹簧秤下挂着一个物体,弹簧秤示数为G,把物体浸入甲液体中,弹簧秤示数为G/3,把物体浸入乙液体中,弹簧秤示数为G/4,则甲、乙两种液体密度之比是(）A.1:2 B.8:9 C.4:3 D.3:4 15、有一木块,放入水中静止后,有 1/4的体积露在水面上,若将它放入另一种液体中时,有3/5 的体积浸入液体中,则液体的密度为_ 16、有一空心球,将它放入水中静止时,露出水面的部分占整个球体体积的1/3；若把球的空心部分充满水,则它可悬浮于水中的任一位置.此球空心部分的体积与整个球体体积之比是_ 文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文
29、档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P
30、3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文
31、档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P
32、3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文
33、档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P
34、3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文
35、档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B117、一个实心铝球悬浮于水银和水的交界面,若铝球、水、水银的密度分别为1,2,3，则它排开水银和水的体积之比为_ 18、甲、乙两个实心球,它们的体积相同,把它们放在水里时,它们露出水面的体积分别是总体积的 1/3 和 1/5,则它们的密度之比甲:乙是_；当它们浸在煤油中时,它们浸入的体积之比V甲:V乙是_。19、烧杯中的冰块漂浮在水中,冰块上部高出杯口,杯中水面恰好与杯口相平.待这些冰块全部熔化后 ()A.将有水从烧杯中溢出 B.不会有水
36、从烧杯中溢出,杯中水面也不会下降C.烧杯中水面会下降 D.熔化过程中水面下降,完全熔化后有水溢出20、水糟内有盐水,盐水上漂浮着一块冰,这块冰全部溶化后,水糟的液面()A.仍保持不变 B.将下降 C.将上升 D.无法判断21、有一个装有水银和水的容器,在水银和水的界面之间悬浮着一块被冰包着的铁块,当冰全部融化后,水面和水银面将()A.水面和水银面都上升 B.水面和水银面都下降C.水面上升,水银面下降 D.水面下降,水银面上升22、(多选)某物理兴趣小组,在测量一个实心小物体的密度时,采用了如下的实验操作:首先用天平测出物体的质量0m；然后在小烧杯中装入一定量的水,用天平测出烧杯和水的总质量1m
37、；再用细线将物体系好后,用手提着细线使物体浸没在此烧杯的水中(水无溢出且物体不接触烧杯),此时天平平衡时测量值为2m,如图所示,下列说法正确的是()A.物体在水中受到的浮力是gm0 B.物体在水中受到的浮力是gmm12文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP
38、7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M
39、5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP
40、7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M
41、5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP
42、7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M
43、5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1C.物体的密度是水120mmm D.物体的密度是水020mmm【出门检测】一.选择题1.(2016连云港 6 题)下列关于浮力的说法正确的是（
44、）A.轮船从长江驶入大海,所受的浮力变大B.悬浮在液体中的物体所受的浮力大小等于物体的重力C.阿基米德原理说明物体所受的浮力大小等于物体的重力D.鸡蛋放入清水中沉在杯子底部,是因为鸡蛋在清水中不受浮力2.(2016桂林 11 题)如图所示,质量相等的甲、乙两球分别悬浮、漂浮在水中,下列说法正确的是（）A.甲球受到的浮力大 B.乙球受到的浮力大C.甲球浸在水中的体积大 D.两球浸在水中的体积一样大3.(2016大庆 6 题)如图所示,烧杯中装有某种液体,A 为圆柱形木块,用外力 F 缓慢将 A压入其中,h 表示木块的下表面到液面的距离,下列关于木块所受浮力F浮和 h 的关系图像正确的是（）4.(
45、2016河南 12 题)如图所示,当溢水杯盛满密度为1的液体时,把实心物块放入杯中,物块漂浮,静止后溢出的液体质量为m1；当溢水杯盛满密度为2的文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
46、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2
47、Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
48、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2
49、Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4
50、 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2Q4M5F8O6 HB6P3Y6B8Q4 ZP7V2H3R5B1文档编码:CW2