the manual provided by the manufacturer of an electric shower [IT WAS IN THE ENEM]
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Hello, I'm Professor Jean Pegoraro and I'm solving the most difficult question that came up in the ENEM this year! (ENEM2017) In the manual provided by the manufacturer of a 220V electric shower, a graph is presented showing the variation in water temperature as a function of the flow rate for three conditions (warm, hot and superhot). In the superhot condition, the dissipated power is 6500 W. Consider the specific heat of water to be 4200 J/(kg °C) and the density of water to be 1 kg/L. Based on the information given, what fraction of the power in the warm condition is the power in the superhot condition? a) 1/3. b) 1/5. c) 3/5. D) 3/8. e) 5/8 If you need to learn how to solve the biggest question in electricity, watch this video [HOW TO KNOW] Resistors in Series or Parallel! • [HOW TO KNOW] Resistors in Series or Parallel...
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