A power station with an efficiency of 0.4 generates 108 W of electric power and dissipates 1.5 x 108 J of heat energy each second to the cooling water that flows through it, which increases its temperature by 3 Celsius degrees. Knowing that the specific heat of water in SI units is 4184 J/kg∙°C, show that 12,000 kg of warmed water flows through the plant each second.