Water flows into the sink shown in figure 5 at a flow rate of 8 L/min. If the drain is closed, the water will eventually flow through the overflow drain holes rather than over the edge of the sink. What is the minimum number of 1-cm diameter drain holes needed to ensure that the water does not overflow the sink? Neglect viscous effects.(ρ_{w}=1000 kg/m^{3}, g=9.81 m/s^{2})