Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Chapter 21, Problem 5A
To determine
To Explain: The direction in which heat flows.
Expert Solution & Answer
Explanation of Solution
Introduction:
Energy contained by matter is called thermal energy. This energy arises due to the vibrations of molecules of the matter. It is responsible for the temperature of the matter.
When thermal energy transfers from one body to another, it is called heat. Heat always flows from a body which has higher temperature to the one which lower temperature as compared to the former.
Chapter 21 Solutions
Conceptual Physics: The High School Physics Program
Ch. 21 - Prob. 1ACh. 21 - Prob. 2ACh. 21 - Prob. 3ACh. 21 - Prob. 4ACh. 21 - Prob. 5ACh. 21 - What is meant by saying that a thermometer...Ch. 21 - Prob. 7ACh. 21 - What is internal energy?Ch. 21 - What is the difference between a calorie and a...Ch. 21 - What is the difference between a calorie and a...
Ch. 21 - What does it mean to say that a material has a...Ch. 21 - Do substances that heat up quickly normally have...Ch. 21 - How does the specific heat capacity of water...Ch. 21 - Prob. 14ACh. 21 - Why does a bimetallic strip curve when it is...Ch. 21 - Which expands most for increases in temperature:...Ch. 21 - Prob. 17ACh. 21 - Ice is less dense than water because of its open...Ch. 21 - Why do lakes and ponds freeze from the top down...Ch. 21 - Why do shallow lakes freeze quickly in winter, and...Ch. 21 - The four plastic-foam soup bowls contain the same...Ch. 21 - Four plastic-foam soup bowls contain the same...Ch. 21 - Prob. 23ACh. 21 - Calculate the number of calories given off by 500...Ch. 21 - A 30-gram piece of iron is heated to 100C and then...Ch. 21 - Suppose a 30-gram piece of iron is dropped into a...Ch. 21 - What mass of water will give up 240 calories when...Ch. 21 - When a 50-gram piece of aluminum at 100C is placed...Ch. 21 - Prob. 29ACh. 21 - Which is greater, an increase in temperature of 1C...Ch. 21 - Prob. 31ACh. 21 - The temperature of the suns interior is about 107...Ch. 21 - Prob. 33ACh. 21 - If you take a bite of hot pizza, the sauce may...Ch. 21 - In the old days, on a cold winter night it was...Ch. 21 - In addition to the overall motion of molecules...Ch. 21 - Prob. 37ACh. 21 - Prob. 38ACh. 21 - Prob. 39ACh. 21 - On a hot day, you remove from a picnic cooler a...Ch. 21 - Why is it important to protect water pipes so they...Ch. 21 - Iceland, so named to discourage conquest by...Ch. 21 - A metal ball is just able to pass through a metal...Ch. 21 - After a machinist slips a hot, snugly fitting iron...Ch. 21 - Prob. 45ACh. 21 - Would a bimetallic strip function if the two...Ch. 21 - Cite an exception to the claim that all substances...Ch. 21 - An old remedy for a pair of nested drinking...Ch. 21 - State whether water at the following temperatures...Ch. 21 - Suppose that water is used in a thermometer...Ch. 21 - If water had a lower specific heat capacity, would...Ch. 21 - How does the combined volume of the billions and...Ch. 21 - People in the pioneering days placed hot potatoes...Ch. 21 - If you wished to warm 100 kg of water by 15C for...Ch. 21 - Anthonys thin plastic water bottle holds 500 mL of...Ch. 21 - Prob. 56ACh. 21 - What would be the final temperature of the mixture...Ch. 21 - What would be the final temperature if you mixed a...Ch. 21 - What would be the final temperature if you mixed a...Ch. 21 - What would be the final temperature when 100 g of...Ch. 21 - What will be the final temperature of 100 g of 20C...Ch. 21 - What is the specific heat capacity of a 50-gram...Ch. 21 - Taylor finds that a certain amount of heat raises...Ch. 21 - Suppose that a metal bar 1 m long expands 0.5 cm...Ch. 21 - Steel expands 1 part in 100,000 for each Celsius...Ch. 21 - A cook pours L of ice water at 0C into a pan of...Ch. 21 - Your (perfectly insulated) bathtub has 82 liters...
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