You put 1.08 liter (1.08 kg) of room-temperature (20C) water (Cwater = 4190 J/kg/K ) into...

 

Transcribed Image Text:

You put 1.08 liter (1.08 kg) of room-temperature (20°C) water (Cwater = 4190 J/kg/K ) into an electric pot that is turned on and transfers heat to the water. Using a beater, you actively stir the water, doing work on the water. You observe that after 4 minutes, the water starts to boil (temperature 100°C). From the manufacturer, you know that the electric pot uses 1200 W. Define the system to be the water. During this 4 minutes, what is the change in thermal energy of the water? AE thermal i During this 4 minutes, what is the energy transferred to the system due to a temperature difference? Q = i Starting from a fundamental principle, calculate the work done by the beater in stirring the water. W = i You put 1.08 liter (1.08 kg) of room-temperature (20°C) water (Cwater = 4190 J/kg/K ) into an electric pot that is turned on and transfers heat to the water. Using a beater, you actively stir the water, doing work on the water. You observe that after 4 minutes, the water starts to boil (temperature 100°C). From the manufacturer, you know that the electric pot uses 1200 W. Define the system to be the water. During this 4 minutes, what is the change in thermal energy of the water? AE thermal i During this 4 minutes, what is the energy transferred to the system due to a temperature difference? Q = i Starting from a fundamental principle, calculate the work done by the beater in stirring the water. W = i

Answer rating: 100% (QA)

SOLUTION Calculating the thermal energy within the first 4 minutes Mass of the ... View the full answer