Physics: Principles with Applications
Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Concept explainers

Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which…
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Question
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Chapter 14, Problem 24Q
To determine

If an ordinary electric fan cools the air or not and to state the reason of its use.

Expert Solution & Answer
Check Mark

Answer to Problem 24Q

Solution:

An ordinary electric fan does not cool the air directly. It is used to circulate the air which in turn cools the air.

Explanation of Solution

The fan blows the air which in turn causes the evaporation of sweat from skin which in turn causes cooling. The air around the body moves away taking away the heat of the body. The removal of the warm air near the body results in cooler air to replace it. Hence, there is indirect cooling.

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Chapter 14 Solutions

Physics: Principles with Applications

Ch. 14 - Prob. 1QCh. 14 - Prob. 2QCh. 14 - (a) If two objects of different temperatures are...Ch. 14 - In warm regions where tropical plants grow but the...Ch. 14 - Prob. 5QCh. 14 - Prob. 6QCh. 14 - Prob. 7QCh. 14 - Prob. 8QCh. 14 - Prob. 9QCh. 14 - Prob. 10Q
Ch. 14 - Prob. 11QCh. 14 - 11. Explorers on failed Arctic expeditions have...Ch. 14 - Prob. 13QCh. 14 - Prob. 14QCh. 14 - Prob. 15QCh. 14 - Prob. 16QCh. 14 - Prob. 17QCh. 14 - Prob. 18QCh. 14 - Prob. 19QCh. 14 - Prob. 20QCh. 14 - Prob. 21QCh. 14 - Prob. 22QCh. 14 - A premature baby in an incubator can be...Ch. 14 - Prob. 24QCh. 14 - Prob. 25QCh. 14 - Prob. 26QCh. 14 - 26. The Earth cools off at night much more quickly...Ch. 14 - Prob. 28QCh. 14 - Prob. 29QCh. 14 - Prob. 30QCh. 14 - To what temperature will 8200 J of heat raise 3.0...Ch. 14 - How much heat (in joules) is required to raise the...Ch. 14 - Prob. 3PCh. 14 - An average active person consumes about 2500 Cal a...Ch. 14 - A British thermal unit (Btu) is a unit of heat in...Ch. 14 - How many joules and kilocalories are generated...Ch. 14 - A water heater can generate 32,000 kJ/h. How much...Ch. 14 - Prob. 8PCh. 14 - An automobile cooling system holds 18 L of water....Ch. 14 - What is the specific heat of a metal substance if...Ch. 14 - (a) How much energy is required to bring a 1.0-L...Ch. 14 - Prob. 12PCh. 14 - 14. (II) What will be the equilibrium temperature...Ch. 14 - A 31.5-g glass thermometer reads 23.6°C before it...Ch. 14 - A 0.40-kg iron horseshoe, just forged and very hot...Ch. 14 - Prob. 16PCh. 14 - The heat capacity, C, ofan object is defined as...Ch. 14 - Prob. 18PCh. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Estimate the Calorie content of 65 g of candy from...Ch. 14 - Prob. 22PCh. 14 - If 3.40 x 105 J of energy is supplied to a...Ch. 14 - How much heat is needed to melt 23.50 kg of silver...Ch. 14 - Prob. 25PCh. 14 - What mass of steam at 100°C must be added to 1.00...Ch. 14 - Prob. 27PCh. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - A cube of ice is taken from the freezer at -8.5°C...Ch. 14 - Prob. 34PCh. 14 - Prob. 35PCh. 14 - Prob. 36PCh. 14 - Prob. 37PCh. 14 - 39. How long does it take the Sun to melt a block...Ch. 14 - Prob. 39PCh. 14 - Two rooms, each a cube 4.0 m per side, share a...Ch. 14 - Prob. 41PCh. 14 - Approximately how long should it take 8.2 kg of...Ch. 14 - Prob. 43PCh. 14 - Suppose the insulating qualities of the wall of a...Ch. 14 - Prob. 45GPCh. 14 - Prob. 46GPCh. 14 - Prob. 47GPCh. 14 - Prob. 48GPCh. 14 - Prob. 49GPCh. 14 - Prob. 50GPCh. 14 - Prob. 51GPCh. 14 - Prob. 52GPCh. 14 - Prob. 53GPCh. 14 - Prob. 54GPCh. 14 - Prob. 55GPCh. 14 - Prob. 56GPCh. 14 - Prob. 57GPCh. 14 - Prob. 58GPCh. 14 - Prob. 59GPCh. 14 - Prob. 60GPCh. 14 - Prob. 61GPCh. 14 - Prob. 62GPCh. 14 - Prob. 63GPCh. 14 - Prob. 64GPCh. 14 - Prob. 65GPCh. 14 - Prob. 66GP

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