Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
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Question
Chapter 10, Problem 1SP
(a)
To determine
What is the temperature change of the object in Fahrenheit degrees.
(b)
To determine
What is the temperature change of the object in kelvins.
(c)
To determine
To explain: Is there any difference in the numerical value of a heat capacity expressed in cal/g·C° from one expressed in cal/g·K.
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Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 200 ° C. The plates are 50 cm x 40 cm in dimensions and 3 cm thick. The convection heat transfer coefficient on the upper surface is 30 W / (m² ° C). The thermal conductivity of steel is 45 W / (m ° C). Calculate the hourly heat loss from the plate surface.
a. heat loss per hour =
Answer
kJ.
b. If the reverse side surface temperature is maintained, determine the hourly heat loss incurred =
Answer
kJ.
The change in temperature of a substance when heated, depends on its specific heat capacity.
a. If the specific heat capacity of lead is 120 j/kgk, what is the heat energy required to raise the tempreture of 0.50 kg of a lead ball from 25°C to 45°C?
b. The 0.50 kg lead ball at 45°C is now dropped into a calorimeter with water at 20°C. if the final temperature of the ball-water system is 25°C, what is the mass of the water?
A solid metal cube has a length of 1 meter and across sectional area of 1 m2. What does it mean that the thermal conductivity of the metal is 170 W/(m °C)?
a. 170 W of heat would flow through the long direction if the block were 170 m long with a temperature difference of 1°C between its two ends.
b. 1 W of heat flows per 170 m2 cross sectional area when the temperature difference is 1°C.
c. It takes 170°C of temperature difference to cause1 W of heat to flow through the cube.
d. 170 W of heat flows through the cube when the temperature difference between the two sides is 1°C.
e. t takes 170 s for 1 W of heat to flow through the cube when the temperature difference is 1°C.
Chapter 10 Solutions
Physics of Everyday Phenomena
Ch. 10 - Is an object that has a temperature of 0C hotter...Ch. 10 - Prob. 2CQCh. 10 - The volume of a gas held at constant pressure...Ch. 10 - We sometimes attempt to determine whether another...Ch. 10 - Prob. 5CQCh. 10 - Is it possible for a temperature to be lower than...Ch. 10 - Is an object with a temperature of 273.2 K hotter...Ch. 10 - Two objects at different temperatures are placed...Ch. 10 - Is it possible for the final temperature of the...Ch. 10 - Two objects of the same mass, but made of...
Ch. 10 - Two cities, one near a large lake and the other in...Ch. 10 - Is it possible to add heat to a substance without...Ch. 10 - What happens if we add heat to water that is at...Ch. 10 - What happens if we remove heat from water at 0C?...Ch. 10 - What does it mean for a liquid to be supercooled?...Ch. 10 - Prob. 16CQCh. 10 - Would a PCM (phase-change material) be useful in a...Ch. 10 - Is it possible to change the temperature of a...Ch. 10 - A hammer is used to pound a piece of soft metal...Ch. 10 - Which represents the greater amount of energy, 1 J...Ch. 10 - Prob. 21CQCh. 10 - Is it possible for the internal energy of a system...Ch. 10 - Based upon his experiments, Joule proposed that...Ch. 10 - An ideal gas is compressed without allowing any...Ch. 10 - Is it possible to decrease the temperature of a...Ch. 10 - Heat is added to an ideal gas, and the gas expands...Ch. 10 - Heat is added to an ideal gas maintained at...Ch. 10 - Prob. 28CQCh. 10 - Prob. 29CQCh. 10 - A block of wood and a block of metal have been...Ch. 10 - Heat is sometimes lost from a house through cracks...Ch. 10 - Is it possible for water on the surface of a road...Ch. 10 - What heat transfer mechanisms (conduction,...Ch. 10 - Prob. 34CQCh. 10 - How do we get heat from the sun through the...Ch. 10 - What property does glass share with carbon dioxide...Ch. 10 - Prob. 37CQCh. 10 - Will a solar power plant (one that generates...Ch. 10 - Prob. 1ECh. 10 - Prob. 2ECh. 10 - The temperature on a very warm summer day is 110F....Ch. 10 - Prob. 4ECh. 10 - Prob. 5ECh. 10 - How much heat is required to raise the temperature...Ch. 10 - How much heat must be removed from a 300-g block...Ch. 10 - How much heat must be added to 120 g of ice at 0C...Ch. 10 - Prob. 9ECh. 10 - Prob. 10ECh. 10 - If 300 cal of heat are added to a system, how much...Ch. 10 - If 1400 J of heat are added to 90 g of water...Ch. 10 - While a gas does 825 J of work on its...Ch. 10 - The volume of an ideal gas is increased from 0.4...Ch. 10 - If the initial temperature in exercise E14 is...Ch. 10 - Work of 2200 J is done on an ideal gas, but the...Ch. 10 - Four hundred calories of heat are added to a gas....Ch. 10 - Work of 1800 J is done by stirring a perfectly...Ch. 10 - Prob. 1SPCh. 10 - A student constructs a thermometer and invents her...Ch. 10 - Prob. 3SPCh. 10 - A 170-g quantity of a certain metal, initially at...Ch. 10 - Prob. 5SPCh. 10 - Suppose the pressure of an ideal gas mixture...
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