College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 11, Problem 15P

(a)

To determine

The mass of water in the pool.

(b)

To determine

The thermal energy required to heat the pool water from 15.5°C to 26.5°C.

(c)

To determine

Cost of heating pool.

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A swimming pool filled with water has dimensions of 5.00 m x 10.0 m x 1.78 m. (a) Find the mass of water in the pool. (b) Find the thermal energy required to heat the pool water from 15.5°C to 26.5°C. (c) Calculate the cost of heating the pool from 15.5°C to 26.5°C if electrical energy costs $0.100 per kilowatt-hour.
A classroom has dimensions 8.00 m x 10.00 m x 3.00 m. A 1000 W electric space heater is being used to warm the room from 5.00°C to 20.00°C on a cold morning. If the density of air is 1.29 kg/m°, and the specific heat capacity of air is 1004 J/(kg-K), how long will it take to heat the room? Assume no loss of thermal energy to the surroundings. A) 1.30 minutes B) 241 minutes C) 45.3 minutes O D) 77.7 minutes
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Chapter 11 Solutions

College Physics

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