{"id":3652,"date":"2018-02-13T13:43:41","date_gmt":"2018-02-13T13:43:41","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=3652"},"modified":"2024-11-27T13:14:20","modified_gmt":"2024-11-27T13:14:20","slug":"resolucao-comentada-transformacoes-de-energia-energia-mecanica","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/enem\/transformacoes-de-energia-energia-mecanica\/resolucao-comentada-transformacoes-de-energia-energia-mecanica\/","title":{"rendered":"Transforma\u00e7\u00f5es de Energia \u2013 Energia Mec\u00e2nica – EN"},"content":{"rendered":"

Commented Resolution \u00a0<\/span><\/b><\/p>\n

Energy Transformations \u2013 Mechanical Energy<\/span><\/b><\/p>\n

01-\u00a0<\/span><\/b>It transforms the gravitational potential energy of the water on the surface of the dam of height h into kinetic energy (of movement) in the turbine. The turbine drives the generator which, in turn, transforms kinetic energy into electrical energy \u2014\u00a0\u00a0\u00a0<\/b>R- D<\/b><\/span>\u00a0<\/b><\/b>\u00a0<\/b><\/b><\/p>\n

02-\u00a0<\/span><\/b>I. Correct \u2014 the function of the steam obtained by nuclear fission is to turn the turbine.\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span>\u00a0<\/b>\u00a0<\/b><\/b><\/p>\n

II. Correct \u2014 according to the statement, the kinetic energy acquired by the turbine, when rotating due to the steam, is transferred to the generator, where it is transformed from kinetic to electrical.<\/span><\/b><\/p>\n

III. False \u2014 the function of the condensation chamber is to liquefy the steam by cooling it and turning it into water, which is then pumped back into the reactor.<\/span><\/b><\/p>\n

R-D<\/span><\/b><\/p>\n

03-\u00a0<\/span><\/b>I. Correct \u2014 the increase in the temperature of a liquid decreases the solubility of the gases (including oxygen) contained in it.<\/b><\/span>\u00a0<\/b><\/b><\/p>\n

II. Correct \u2014 since fish are poikilothermic animals (temperature varies according to the environment in which they are found), changes in water temperature affect their metabolism and, depending on the intensity of the change, may result in their death.<\/span><\/b><\/p>\n

III. False \u2014 the increase in water temperature favors the increase of microorganisms (bacteria and algae), harming the development of vegetation.<\/span><\/b><\/p>\n

<\/p>\n