7. 400 g of boiling water (temperature 100°C, specific heat 4.2 J/K/g) are poured into an aluminum pan whose mass is 600 g and whose initial temperature is 20°C (the specific heat of aluminum is 0.9 J/K/g). After a short time, what is the temperature of the water? Explain. What simplifying assumptions did you have to make?

7. 400 g of boiling water (temperature 100°C, specific heat 4.2 J/K/g) are poured into an aluminum pan whose mass is 600 g and whose initial temperature is 20°C (the specific heat of aluminum is 0.9 J/K/g). After a short time, what is the temperature of the water? Explain. What simplifying assumptions did you have to make?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter11: Energy In Thermal Processes

Section: Chapter Questions

Problem 52P: A granite ball of radius 2.00 m and emissivity 0.450 is heated to 135C. (a) Convert the given...

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A granite ball of radius 2.00 m and emissivity 0.450 is heated to 135C. (a) Convert the given temperature to Kelvin. (b) What is the surface area of the ball? (c) If the ambient temperature is 25.0C, what net power does the ball radiate?
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(a) How much heat transfer is required to raise the temperature of a 0.750kg aluminum pot containing 2.50 kg of water from 30.0C to the boiling point and then boil away 0.750 kg of water? (b) How long does this take if the rate of heat transfer is 500 W 1watt=ljoule/second(lW=lJ/s) ?
A granite ball of radius 2.00 m and emissivity 0.450 is heated to 135C. (a) Convert the given temperature to Kelvin. (b) What is the surface area of the ball? (c) If the ambient temperature is 25.0C, what net power does the ball radiate?
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