将未装满水且密闭的矿泉水瓶,先正立放置在水平桌面上,再倒水放置,如图所示。两次放置时,水对瓶底和瓶盖的压强分别为pA和pB, 瓶底和瓶盖对桌面的压力分别为FA和FB,则( )
A.pA>pB FA>FB | B.pA<pB FA=FB |
C.pA=pBFA<FB | D.pA<pB FA>FB |
将未装满水且密闭的矿泉水瓶,先正立放置在水平桌面上,再倒水放置,如图所示。两次放置时,水对瓶底和瓶盖的压强分别为pA和pB, 瓶底和瓶盖对桌面的压力分别为FA和FB,则( )
A.pA>pB FA>FB | B.pA<pB FA=FB |
C.pA=pBFA<FB | D.pA<pB FA>FB |
试题篮
()