配套习题- 沉浮条件的应用技巧 -【青果学院】

1/5单选题

难度：

1.

端午节那天，小明发现煮熟的咸鸭蛋有的沉在水底，有的浮在水面（如图所示）. 若甲的体积比乙小，则下列分析合理的是（　　）

A	甲的质量比乙大
B	甲受到的浮力等于重力
C	甲的密度比乙大
D	乙受到的浮力大于重力

正确答案：Qg==

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

2/5单选题

难度：

2.

把体积相等的甲、乙两个小球同时放入装有适量水的杯中，两球均沉在杯底（如图所示），向水杯中加入适量盐水后. 甲球上升，乙球仍沉在杯底. 对下列分析中正确的是（　　）

A	甲球的密度大于乙球的密度
B	加入盐水后，甲乙两球所受浮力相等
C	加入盐水后，乙球对杯底的压力变大
D	加入盐水后，甲球所受浮力变大，乙球所受浮力不变

正确答案：Qg==

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

3/5单选题

难度：

3.

将同一个正方体物体先后放入a、b、c三种液体中，物体静止时如图所示. 则下列判断正确的是（　　）青果学院

A	在三种液体中，物体受到的浮力相等
B	在三种液体中，物体受到的浮力不相等
C	液体的密度ρ_a＞ρ_b＞ρ_c
D	在三种液体中，物体下表面受到的液体压强相等

正确答案：QQ==

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

4/5单选题

难度：

4.

一个球先后在盛有不同液体的容器A、B、C、D中保持静止状态，如图，四个容器中液面到容器底面的深度相同，容器底面受到液体压强最大的是（　　）

A
B
C
D

正确答案：QQ==

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

5/5单选题

难度：

5.

相同型号的甲、乙、丙三艘潜水艇，甲漂浮，受到的浮力为F_甲；乙悬浮，受到的浮力为F_乙；丙沉入海底，受到的浮力为F_丙. 下列说法正确的是（　　）

A	漂浮和悬浮时，受到的浮力等于重力，F_甲=F_乙
B	乙悬浮时，浮力等于重力，丙沉入海底时浮力小于重力，F_乙＞F_丙
C	甲漂浮排开水的体积最小，丙沉入海底排开水的体积最大，F_甲＜F_乙＜F_丙
D	甲漂浮时V_排＜V_物，乙和丙浸没时V_排′=V_物，F_甲＜F_乙=F_丙

正确答案：RA==

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