2. In an experimental set-up, 5 kg of salt solution is heated in a glass vessel by a 159 W power gas burner. The internal energy of the solution is to be increased from 90 kJ/kg to 178 kJ/kg for a certain amount of time. An electric stirrer is used to ensure uniform heating of solutions, the power consumption of the stirrer is 3OW. The rate of heat loss from the vessel 50 W. How many minutes was the solution heated if the motor is 80% efficient?

2. In an experimental set-up, 5 kg of salt solution is heated in a glass vessel by a 159 W power gas burner. The internal energy of the solution is to be increased from 90 kJ/kg to 178 kJ/kg for a certain amount of time. An electric stirrer is used to ensure uniform heating of solutions, the power consumption of the stirrer is 3OW. The rate of heat loss from the vessel 50 W. How many minutes was the solution heated if the motor is 80% efficient?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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