ans d:

22. A cubical box of wine has a small spout located in one of the bottom corners. When the box is full and placed on a level surface, opening the spout results in a flow of wine with a initial speed of v_o (see figure). When the box is half empty, someone tilts it at 45^o so that the spout is at the lowest point (see figure). When the spout is opened the wine will flow out with a speed of 

$\left(\mathrm{A}\right) {\mathrm{V}}_0 \left(\mathrm{B}\right) {\mathrm{V}}_0/2 \left(\mathrm{C}\right) {\mathrm{V}}_0/\sqrt{2} \left(\mathrm{D}\right) {\mathrm{V}}_0/\sqrt[4]{2}$