Problem $4.$ Using the Reynolds transport theorem estimate the time required to fill

with water a cone$-$shaped container $5$ ft in height and $5$ ft across at the top if the

filling rate is $20ga\frac{l}{m}in.($Volume of the cone is : $\frac{r^2(h)}{3})$

Problem $5.$ A bird is flying in a room with a velocity field of

vec$(V)=(u,v,w)=(0\mathrm{.}6x,0\mathrm{.}2t,-1\mathrm{.}4)\frac{m}{s}$