就例如Bernoulli’s equation嘅water tank problem
Calculate the speed at which liquid flows out a small hole in the bottom of a large tank containing liquid to a depth of 1.0m. Also, find the volume flow rate for a hole of radius 3.0mm.
我唔知原來因為個tank太大所以v可以assume做0

然後就kick撚咗唔識做
