1)根據伯努利方程p1+ρgh1+(1/2)*ρv1^2=p2+ρgh2+(1/2)*ρv2^2選取出水口內、外兩個狀態計算
P2=101325Pa ,h1=h2=h=3m ,v1=0 m/s ,ρ=1000kg/m^3 ,
v2=s/t=s/√2h/g=s/√2h/g ,s=5m ,g=10m/s^2
計算得v2=6.45m/s
p1+1000*10*3=101325+1000*10*3+(1/2)*1000*6.45^2
p1=122126Pa
2)排出水的體積=vst
v=6.45m/s s=πd^2/4=3.14*0.4^2/4=0.1256m^2 t=24h*3600s/h=86400s
排出水的體積=6.45*0.1256*86400=69994m^3