配套习题-液体压强问题的3个易错点 -【青果学院】

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1.在一竖直放置的试管中装入一定量的某种液体，试管底部受到的液体压强是𝑝₁，将试管倾斜（液体未流出），试管底部受到的液体压强为𝑝₂，则（）

A: 𝑝₁<𝑝₂

B: 𝑝₁=𝑝₂

C: 𝑝₁>𝑝₂

D: 无法确定

提示1：IOivleeuoeWAvuaWnOWQju+8jOa2suS9k+WcqOerluebtOaWueWQkeeahOmrmOW6puWPmOWwjw==
提示2：IOa2suS9k+WvhuW6puS4jeWPmO+8jOeUseWOi+W8uuWFrOW8j1A9z4FnaOWPr+efpeWOi+W8uuWPmOWwjw==
答案：Qw==
PGRpdj7op6PvvJror5XnrqHlgL7mlpzlkI7vvIzmtrLkvZPlnKjnq5bnm7TmlrnlkJHnmoTpq5jluqZo5Y+Y5bCP44CC5ray5L2T5a+G5bqmz4HkuI3lj5jvvIznlLHljovlvLrlhazlvI9wPc+BZ2jlj6/nn6XvvJrljovlvLrlj5jlsI/vvJvmlYUmIzExOTkwMTs8c3ViPjE8L3N1Yj4mZ3Q7JiMxMTk5MDE7PHN1Yj4yPC9zdWI+IO+8jOetlOahiEPmraPnoa48L2Rpdj4=

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2.

一平底玻璃杯，内装3N水，放在水平桌面上。杯子与桌面的接触面积为20cm²，杯内水面高度10cm,则水对杯底的压力为（）

A:
3N

B:
2N

C:
4N

D:
5N

提示1：PHA+5a655Zmo5LiN5LiA5a6a5piv5p+x54q25a655Zmo77yM5omA5Lul5a655Zmo5bqV5Y+X5Yiw55qE5Y6L5Yqb5LiN5LiA5a6a562J5LqO6YeN5YqbPC9wPg==
提示2：PHA+5Y6L5YqbRj1wUyDvvIzljovlvLpwPc+BZ2ggLOWboOatpEY9z4FnaCBTPC9wPg==
答案：Qg==
PGRpdj7op6PvvJogLuiLpeadr+WtkOaYr+WchuafseW9oixHPHN1Yj7msLQ8L3N1Yj49z4FnaHM9McOXMTA8c3VwPjM8L3N1cD5rZy9tIDxzdXA+Mzwvc3VwPsOXMTBOL2tnw5cwLjFtw5cyMMOXMTA8c3VwPi00PC9zdXA+bTxzdXA+Mjwvc3VwPj0yTjwvZGl2PjxkaXY+5p2v5a2Q5Lit5rC055qE5a6e6ZmF6YeN5Yqb5Li6M04sPC9kaXY+PGRpdj7miYDku6Xmna/lrZDmmK/lj6PlpKflupXlsI/nmoTlvILlnovlrrnlmaguRuKJoEcu5a+55LqO5byC5Z6L5a655ZmoLOaxgua2suS9k+WOi+WKmyzlupTlhYjmsYLljovlvLrlkI7msYLljovlips8L2Rpdj4=

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3.如图，甲、乙两支完全相同的试管. 分别装有质量相等的液体. 甲试管竖直放置，乙试管倾斜放置，两试管液面相平。液体对两试管底的压强分别为P_甲和 P_乙，则（）

A: P_甲 < P_乙

B: P_甲 = P_乙

C: P_甲 > P_乙

D: 条件不足，无法判断

提示1：IOeUseWbvuWPr+efpe+8jOS5meivleeuoeS4rea2suS9k+S9k+enr+Wkp++8m+eUsuOAgeS5meivleeuoeS4rea2suS9k+i0qOmHj+ebuOetie+8jOWboOatpDxpbWcgd2lkdGg9NTUgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvQ0IvckJBQ0UxTU1mUURRN2JIR0FBQUI2QmlCX1JvMDA0LnBuZyI+
提示2：IOagueaNrua2suS9k+WOi+W8uuWFrOW8j3A9z4FnaOWPr+efpVA8c3ViPueUsjwvc3ViPiAmZ3Q7IFA8c3ViPuS5mTwvc3ViPjxzdWI+IDwvc3ViPg==
答案：Qw==
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4.

一个装满水后瓶盖密封的硬塑料瓶，放在水平地面上，如图1，水对瓶底的压强为P₁，瓶底对桌面的压强为P₁^′ ；将瓶倒置后,如图2，水对瓶盖的压强为P₂，瓶盖对桌面的压强为P₂′，则（）

A:
P₁＞P₂P₁′＞P₂′

B:
P₁＝P₂ P₁′＜P₂′

C:
P₁＜P₂P₁′＜P₂′

D:
P₁＝P₂ P₁′＝P₂′

提示1：PHA+5rC05piv6KOF5ruh55qE77yM5omA5Lul5YCS572u5ZCO5ray5L2T55qE5rex5bqmaOS4jeWPmO+8jOaciea2suS9k+WOi+W8uuWFrOW8j+WPr+W+l+awtOWvueWuueWZqOW6leeahOWOi+W8uuS4jeWPmDwvcD4=
提示2：PHA+55O25a2Q5a+55qGM6Z2i55qE5Y6L5by65bqU6K+l55SoPGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIzL0NDL3JCQUNFMU1NZlRpQnRRcllBQUFCZXhkTG9IWTc3NC5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjMvQ0MvckJBQ0UxTU1mVGlCdFFyWUFBQUJleGRMb0hZNzc0LnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9IjMzIj7orqHnrpfvvIzljovlipvnrYnkuo7nk7bph43lipvvvIzkuI3lj5jjgILlgJLnva7lkI7vvIzlj5flipvpnaLnp6/lh4/lsI/vvIzmiYDku6Xlr7nmoYzpnaLljovlvLrlop7lpKc8L3A+
答案：Qg==
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难度系数：

5.如图，容器中盛重为30N的水，容器底面积为200cm²，液面高为20cm。则水对容器底部的压力和压强分别为（）

A: 30N 1500Pa

B: 40N 1500Pa

C: 30N 2000Pa

D: 40N 2000Pa

提示1：IOafseeKtuWuueWZqOS4rea2suS9k+WvueWuueWZqOW6leeahOWOi+WKm+etieS6jua2suS9k+eahOmHjeWKmw==
提示2：IOmdnuafseeKtuWuueWZqOS4rea2suS9k+WvueWuueWZqOW6leeahOWOi+WKm+imgeagueaNruWFrOW8j++8mkY9cFPorqHnrpc=
答案：RA==
PGRpdj7op6PvvJog5qC55o2ucD3PgWdo77yM6K6h566X5Ye65Y6L5by65Li6MjAwMFBhICwg5qC55o2uRj1wUyDluKblhaXlt7Lnn6XvvIzlvpfvvJrljovlipvkuLo0ME48L2Rpdj48ZGl2PiDmiYDku6VE5q2j56GuPC9kaXY+

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