1.15 The heat capacity of air is much smaller than that of water, and relatively modest amounts of heat are needed to change its temperature. This is one of the reasons why desert regions, although very hot during the day, are bitterly cold at night. The heat capacity of air at room temperature and pressure is approximately 21 JK-' mol'. How much energy is required to raise the temperature of a room of dimensions 5.5 m ×6.5 m× 3.0 m by 10°C? If losses are neglected, how long will it take a heater rated at 1.5 kW to achieve that increase given that 1 W=1Js!?

1.15 The heat capacity of air is much smaller than that of water, and relatively modest amounts of heat are needed to change its temperature. This is one of the reasons why desert regions, although very hot during the day, are bitterly cold at night. The heat capacity of air at room temperature and pressure is approximately 21 JK-' mol'. How much energy is required to raise the temperature of a room of dimensions 5.5 m ×6.5 m× 3.0 m by 10°C? If losses are neglected, how long will it take a heater rated at 1.5 kW to achieve that increase given that 1 W=1Js!?

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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