ENEM 2016 - Durante a primeira fase do projeto de uma usina de geração de energia elétrica, os engen

(ENEM 2016) During the first phase of a power plant project, the engineers on the environmental impact assessment team are trying to determine if the project complies with environmental regulations. The new plant will be located on the banks of a river with an average water temperature of 25 °C, and will use its water only for cooling. The project aims for the plant to operate with 1.0 MW of electrical power, and due to technical constraints, twice that power will be dissipated by its cooling system in the form of heat. To comply with Resolution No. 430 of May 13, 2011, of the National Council for the Environment, with a wide safety margin, the engineers determined that the water can only be returned to the river with a temperature increase of, at most, 3 °C compared to the temperature of the river water captured by the cooling system. Consider the specific heat of water to be 4 kJ/(kg∙°C). To meet this requirement, the minimum water flow rate, in kg/s, for cooling the plant should be closest to: A) 42. B) 84. C) 167. D) 250. E) 500. ================== Did you like the video? Like, subscribe and share. If you want to learn Physics with me from ZERO to ENEM, access the website ✅ https://go.fisiquei.com.br/campaign/f... and check out my course. Follow me on social media for more Physics content: 👉  / thalesquirino   Share this video: 👉   • ENEM 2016 - Durante a primeira fase do pro...   Check out the complete playlist of ENEM 2016 solutions: 👉   • ENEM 2016 - A magnetohipertermia é um proc...   Professor Thales Quirino Medeiros ================== #approval #enem #physics #lesson #solution #tip #question #exercise #correction #answerkey #approval #physics #physiquei #videolesson #powerplant #thermalpowerplant #river #heating #thermalpollution #cooling #power #electricalpower #megawatts