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压强的计算

> 分别用铜、铁的制成两个质量相等的实心正方体（ρ 铜＞ρ 铁），放在水平桌面上，它们对桌面压强P 1、P 2，对桌面的压力分别为F 1、F 2，则（　　） A．P1=P2，F1＞F2 B．P1=P2，F1＜F2 C．P1＜P2，F1=F2 D．P1＞P2，F1=F2

问题：

发布时间：2024-09-13

分别用铜、铁的制成两个质量相等的实心正方体（ρ _铜＞ρ _铁），放在水平桌面上，它们对桌面压强P ₁、P ₂，对桌面的压力分别为F ₁、F ₂，则（　　）

A．P₁=P₂，F₁＞F₂ B．P₁=P₂，F₁＜F₂

C．P₁＜P₂，F₁=F₂ D．P₁＞P₂，F₁=F₂

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分别用铜、铁的制成两个质量相等的实心正方体（ρ 铜＞ρ 铁），放在水平桌面上，它们对桌面压强P 1、P 2，对桌面的压力分别为F 1、F 2，则（ ） A．P1=P2，F1＞F2 B．P1=P2，F1＜F2 C．P1＜P2，F1=F2 D．P1＞P2，F1=F2

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