-
体积相同的A、B两种液体的质量之比为4:5.把它们分别倒入两个容器中.在A液体中放入小球甲,B液体中放入小球乙,且两球体积相同.在下述各个状态中,比较两球受到浮力的大小,一定正确的是( )
A.甲漂浮,乙沉底时,甲受浮力小
B.都悬浮时,受浮力相等
C.都沉没在液体底部时,甲受浮力大
D.都漂浮时,乙受浮力大
-
体积相同的A、B两种液体的质量之比为4:5.把它们分别倒入两个容器中.在A液体中放入小球甲,B液体中放入小球乙,且两球体积相同.在下述各个状态中,比较两球受到浮力的大小,一定正确的是( )
A.甲漂浮,乙沉底时,甲受浮力小
B.都悬浮时,受浮力相等
C.都沉没在液体底部时,甲受浮力大
D.都漂浮时,乙受浮力大
-
体积相同的A、B两种液体质量之比为4:5.把它们分别倒入两个容器中.将体积相同的甲、乙两个小球分别放在A、B液体中.在下述各个状态中,比较甲、乙小球所受浮力大小,说法正确的是( )
A.甲、乙小球都漂浮时,甲受浮力一定较小
B.甲、乙小球都悬浮时,所受浮力一定相等
C.甲、乙小球都沉没在液体底部时,乙受浮力一定较小
D.甲小球漂浮,乙小球沉没在液体底部时,甲受浮力一定较小
-
两个完全相同的圆柱形容器内分别盛有质量相同的水和酒精(
)。为了使水对容器底的压强小于酒精对容器底的压强,应分别在两个容器内(无液体溢出)
A.倒入相同质量的水和酒精
B.倒入相同体积的水和酒精
C.抽出相同体积的水和酒精
D.抽出相同质量的水和酒精
-
两个完全相同的圆柱形容器内分别盛有质量相同的水和酒精(ρ水>ρ酒精).为了使水对容器底的压强小于酒精对容器底的压强,应分别在两个容器内(无液体溢出)( )
A.倒入相同质量的水和酒精
B.倒入相同体积的水和酒精
C.抽出相同质量的水和酒精
D.抽出相同体积的水和酒精
-
两个完全相同的圆柱形容器内分别盛有质量相同的水和酒精(ρ水>ρ酒精).为了使水对容器底的压强小于酒精对容器底的压强,应分别在两个容器内(无液体溢出)( )
A.倒入相同质量的水和酒精
B.倒入相同体积的水和酒精
C.抽出相同质量的水和酒精
D.抽出相同体积的水和酒精
-
两个完全相同的圆柱形容器内分别盛有质量相同的水和酒精(ρ水>ρ酒精).为了使水对容器底的压强小于酒精对容器底的压强,应分别在两个容器内(无液体溢出)( )
A.倒入相同质量的水和酒精
B.倒入相同体积的水和酒精
C.抽出相同质量的水和酒精
D.抽出相同体积的水和酒精
-
往甲乙两个质量相等的圆柱形容器中分别倒入不同的液体A和B,如图所示,A、B液体对两个容器底的压强相等。再将两个完全相同的小球分别放入A、B液体中,静止时小球在A中漂浮,在B中沉底,且液体均不溢出。下列说法正确的是( )
![](https://img.xintiku.com/upload/5c/3b/5c3baa6ca70862172cda8ea387f38b42.png)
A.两个小球所受到的浮力一定不相等
B.液体A的密度大于液体B的密度
C.放入小球后,液体A对容器底的压强不变
D.放入小球后,容器甲对桌面的压力小于容器乙对桌面的压力
-
往甲乙两个质量相等的圆柱形容器中分别倒入不同的液体A和B,如图所示,A、B液体对两个容器底的压强相等。再将两个完全相同的小球分别放入A、B液体中,静止时小球在A中漂浮,在B中沉底,且液体均不溢出。下列说法正确的是( )
![](https://img.xintiku.com/upload/61/b1/61b132b388a255d4e715abac49093837.png)
A.两个小球所受到的浮力一定不相等
B.液体A的密度大于液体B的密度
C.放入小球后,液体A对容器底的压强不变
D.放入小球后,容器甲对桌面的压力小于容器乙对桌面的压力
-
水平放置的甲、乙两个圆柱形容器的底面积分别为S甲和S乙,分别装有质量相等的水和酒精,液面的高度分别为h水和h酒精.当在两容器中分别倒入相同体积的原来种类的液体后,液体对容器底部的压强相等,则倒入液体前的情况可能是图中的( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGsAAAB1CAYAAABJYx/nAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGkAAAB1CAYAAABNls/aAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAH4AAAB1CAYAAACI5FVLAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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)
D.