山里向茶 2023-06-15 编辑: admin 103阅读 栏目:茶杯
(1)p=ρgh=1000kg/m³×9.8N/kg×0.12m=1176Pa
F=ps=1176pa×0.004m²=4.704N
(2)P=(Mg+mg)÷S=(0.4×9.8+0.6×9.8)÷0.004=2450Pa
茶壶 2023-01-19 点击:1925
茶壶 2023-02-07 点击:944
茶壶 2023-03-14 点击:744
茶壶 2023-02-21 点击:678
茶壶 2023-01-25 点击:660
茶壶 2023-02-16 点击:546
茶壶 2023-01-29 点击:519