A water tank with a cross$-$

sectional area of $5f{t}^2$ is open

to the atmosphere. A nozzle

with a cross$-$ sectional area

of $1\mathrm{.}5f{t}^2$ is connected at the

bottom as shown below.

Calculate the velocity at the

exit of the nozzle assuming

the flow through the nozzle

is frictionless.