Physics for Science and Engineering With Modern Physics, VI - Student Study Guide
4th Edition
ISBN: 9780132273244
Author: Doug Giancoli
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 19, Problem 68P
(III) Suppose the insulating qualities of the wall of a house come mainly from a 4.0-in, layer of brick and an R-19 layer of insulation, as shown in Fig. 19-35. What is the total rate of heat loss through such a wall, if its total area is 195 ft2 and the temperature difference across it is 12 F°?
FIGURE 19-35 Problem 68.
Two layers insulating a wall.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
a) A house walls that are 20 cm thick and
have an average thermal conductivity four
times that of glass wool. Assume there are no
windows or doors. The walls' surface area is
1000000 cm² and their inside surface is at
23° Çwhile their outside surface is at 4° C
(Thermal conductivity of glass wool is 0.042
W/m°C)
(i) Calculate the rate of heat conduction
through house walls?
(ii) How many 150W room heaters would be
needed to balance the heat transfer due to
conduction? (approximate number)
b) A spherical infrared heater of radius 6.05
cm has an emissivity of 0.74. What
temperature must it run at if the required
power is 0.42 kW? Neglect the temperature
of the environment. (Stefan's constant =
5.67*10-8 Wm¯-2K-4)
The temperature of the heater in Celsius =
a) A house walls that are 23 cm thick and have an average thermal conductivity two times that of cork. Assume
there are no windows or doors. The walls' surface area is 800000 cm2 and their inside surface is at 22°C, while
their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C)
0 Calculate the rate of heat conduction through house walls?
(ii) How many 400W room heaters would be needed to balance the heat transfer due to conduction?
(approximate number)
b) A spherical infrared heater of radius 5.65 cm has an emissivity of 0.74. What temperature must it run at if the
required power is 0.42 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10-8 Wm-
The temperature of the heater in Celsius =
a) A house walls that are 12 cm thick and have an average thermal conductivity two times that of
cork. Assume there are no windows or doors. The walls' surface area is 1300000 cm? and their
inside surface is at 21°C, while their outside surface is at 5°C. (Thermal conductivity of cork is
0.042 W/m°C)
1) Calculate the rate of heat conduction through house walls?
(ii) How many 400W room heaters would be needed to balance the heat transfer due to
conduction? (approximate number)
b) A spherical infrared heater of radius 5.2 cm has an emissivity of 0.82. What temperature must it
run at if the required power is 0.48 kW? Neglect the temperature of the environment. (Stefan's
constant = 5.67*10-8 Wm-2K4)
The temperature of the heater in Celsius =
Chapter 19 Solutions
Physics for Science and Engineering With Modern Physics, VI - Student Study Guide
Ch. 19.2 - Return to the Chapter-Opening Question, page 496,...Ch. 19.5 - Prob. 1BECh. 19.5 - How much more ice at 10C would be needed in...Ch. 19.6 - What would be the internal energy change in...Ch. 19.7 - Is the work done by the gas in process ADB of Fig....Ch. 19.7 - In Example 1910, if the heat lost from the gas in...Ch. 19.10 - Fanning yourself on a hot day cools you by (a)...Ch. 19 - What happens to the work done on a jar of orange...Ch. 19 - Prob. 2QCh. 19 - Prob. 3Q
Ch. 19 - Prob. 4QCh. 19 - Prob. 5QCh. 19 - Why does water in a canteen stay cooler if the...Ch. 19 - Explain why burns caused by steam at 100C on the...Ch. 19 - Prob. 8QCh. 19 - Will potatoes cook faster if the water is boiling...Ch. 19 - Prob. 10QCh. 19 - Prob. 11QCh. 19 - Use the conservation of energy to explain why the...Ch. 19 - In an isothermal process, 3700 J of work is done...Ch. 19 - Explorers on failed Arctic expeditions have...Ch. 19 - Why is wet sand at the beach cooler to walk on...Ch. 19 - When hot-air furnaces are used to heat a house,...Ch. 19 - Is it possible for the temperature of a system to...Ch. 19 - Discuss how the first law of thermodynamics can...Ch. 19 - Explain in words why CP is greater than CV.Ch. 19 - Prob. 20QCh. 19 - An ideal monatomic gas is allowed to expand slowly...Ch. 19 - Ceiling fans are sometimes reversible, so that...Ch. 19 - Goose down sleeping bags and parkas are often...Ch. 19 - Microprocessor chips nowadays have a heat sink...Ch. 19 - Sea breezes are often encountered on sunny days at...Ch. 19 - The Earth cools off at night much more quickly...Ch. 19 - Explain why air-temperature readings are always...Ch. 19 - A premature baby in an incubator can be...Ch. 19 - Prob. 29QCh. 19 - A 22C day is warm, while a swimming pool at 22C...Ch. 19 - Prob. 32QCh. 19 - Prob. 33QCh. 19 - Prob. 34QCh. 19 - Prob. 35QCh. 19 - An emergency blanket is a thin shiny...Ch. 19 - Explain why cities situated by the ocean tend to...Ch. 19 - (I) To what temperature will 8700 J of heat raise...Ch. 19 - Prob. 2PCh. 19 - Prob. 3PCh. 19 - (II) A British thermal unit (Btu) is a unit of...Ch. 19 - Prob. 5PCh. 19 - Prob. 6PCh. 19 - (I) An automobile cooling system holds 18 L of...Ch. 19 - Prob. 8PCh. 19 - (II) (a) How much energy is required to bring a...Ch. 19 - Prob. 10PCh. 19 - Prob. 11PCh. 19 - (II) A hot iron horseshoe (mass = 0.40kg), just...Ch. 19 - (II) A 31.5-g glass thermometer reads 23.6C before...Ch. 19 - Prob. 14PCh. 19 - (II) When a 290-g piece of iron at 180C is placed...Ch. 19 - (II) The heat capacity. C, of an object is defined...Ch. 19 - (II) The 1.20-kg head of a hammer has a speed of...Ch. 19 - (I) How much heat is needed to melt 26.50kg of...Ch. 19 - (I) During exercise, a person may give off 180...Ch. 19 - (II) A 35g ice cube at its melting point is...Ch. 19 - (II) High-altitude mountain climbers do not eat...Ch. 19 - (II) An iron boiler of mass 180 kg contains 730kg...Ch. 19 - (II) In a hot days race, a bicyclist consumes 8.0...Ch. 19 - (II) The specific heat of mercury is 138 J/kg C....Ch. 19 - Prob. 25PCh. 19 - (II) A 58-kg ice-skater moving at 7.5 m/s glides...Ch. 19 - (I) Sketch a PV diagram of the following process:...Ch. 19 - (I) A gas is enclosed in a cylinder fitted with a...Ch. 19 - (II) The pressure in an ideal gas is cut in half...Ch. 19 - (II) A 1.0-L volume of air initially at 3.5 atm of...Ch. 19 - (II) Consider the following two-step process. Heat...Ch. 19 - (II) The PV diagram in Fig. 1931 shows two...Ch. 19 - (II) Suppose 2.60 mol of an ideal gas of volume V1...Ch. 19 - (II) In an engine, an almost ideal gas is...Ch. 19 - (II) One and one-half moles of an ideal monatomic...Ch. 19 - (II) Determine (a) the work done and (b) the...Ch. 19 - (II) How much work is done by a pump to slowly...Ch. 19 - (II) When a gas is taken from a to c along the...Ch. 19 - (III) In the process of taking a gas from state a...Ch. 19 - (III) Suppose a gas is taken clockwise around the...Ch. 19 - (III) Determine the work done by 1.00 mol of a van...Ch. 19 - (I) What is the internal energy of 4.50 mol of an...Ch. 19 - Prob. 43PCh. 19 - Prob. 44PCh. 19 - Prob. 45PCh. 19 - What gas is it? (II) Show that the work done by n...Ch. 19 - (II) An audience of 1800 fills a concert hall of...Ch. 19 - Prob. 48PCh. 19 - Prob. 49PCh. 19 - (III) A 1.00-mol sample of an ideal diatomic gas...Ch. 19 - (I) A 1.00-mol sample of an ideal diatomic gas,...Ch. 19 - (II) Show, using Eqs. 196 and 1915, that the work...Ch. 19 - (III) A 3.65-mol sample of an ideal diatomic gas...Ch. 19 - (II) An ideal monatomic gas, consisting of 2.8 mol...Ch. 19 - (III) A 1.00-mol sample of an ideal monatomic gas,...Ch. 19 - (III) Consider a parcel of air moving to a...Ch. 19 - Prob. 57PCh. 19 - (I) One end of a 45-cm-long copper rod with a...Ch. 19 - (II) How long does it take the Sun to melt a block...Ch. 19 - (II) Heat conduction to skin. Suppose 150 W of...Ch. 19 - (II) A ceramic teapot ( = 0.70) and a shiny one (...Ch. 19 - (II) A copper rod and an aluminum rod of the same...Ch. 19 - Prob. 63PCh. 19 - Prob. 64PCh. 19 - (III) A house thermostat is normally set to 22C,...Ch. 19 - (III) Approximately how long should it take 9.5 kg...Ch. 19 - (III) A cylindrical pipe has inner radius R1 and...Ch. 19 - (III) Suppose the insulating qualities of the wall...Ch. 19 - Prob. 69GPCh. 19 - (a) Find the total power radiated into space by...Ch. 19 - Prob. 71GPCh. 19 - A mountain climber wears a goose-down jacket 3.5...Ch. 19 - Prob. 73GPCh. 19 - Estimate the rate at which heat can he conducted...Ch. 19 - A marathon runner has an average metabolism rate...Ch. 19 - A house has well-insulated walls 19.5 cm thick...Ch. 19 - In a typical game of squash (Fig. 19-36), two...Ch. 19 - A bicycle pump is a cylinder 22 cm long and 3.0 cm...Ch. 19 - Prob. 79GPCh. 19 - The temperature within the Earths crust increases...Ch. 19 - An ice sheet forms on a lake. The air above the...Ch. 19 - An iron meteorite melts when it enters the Earths...Ch. 19 - A scuba diver releases a 3.60-cm-diameter...Ch. 19 - A reciprocating compressor is a device that...Ch. 19 - The temperature of the glass surface of a 75-W...Ch. 19 - Suppose 3.0 mol of neon (an ideal monatomic gas)...Ch. 19 - At very low temperatures, the molar specific heat...Ch. 19 - A diesel engine accomplishes ignition without a...Ch. 19 - When 6.30 105 J of heat is added to a gas...Ch. 19 - In a cold environment, a person can lose heat by...Ch. 19 - Prob. 91GP
Additional Science Textbook Solutions
Find more solutions based on key concepts
How Would the experiments result charge if oxygen (O2) were induced in the spark chamber?
Biology: Life on Earth with Physiology (11th Edition)
Choose the best answer to each of the following. Explain your reasoning. Which lists the major steps of solar s...
Cosmic Perspective Fundamentals
The bioremediation process shown in the photograph is used to remove benzene and other hydrocarbons from soil c...
Microbiology: An Introduction
Carefully examine the common sedimentary rocks shown In Figure 2.13. Use these photos and the preceding discuss...
Applications and Investigations in Earth Science (9th Edition)
Police Captain Jeffers has suffered a myocardial infarction. a. Explain to his (nonmedically oriented) family w...
Human Physiology: An Integrated Approach (8th Edition)
What are four functions of connective tissue?
Anatomy & Physiology (6th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- a) A house walls that are 13 cm thick and have an average thermal conductivity three times that of cork. Assume there are no windows or doors. The walls’ surface area is 900000 cm2 and their inside surface is at 18°C°C, while their outside surface is at 5°C°C. (Thermal conductivity of cork is 0.042 W/m°C) (i) Calculate the rate of heat conduction through house walls? (ii) How many 200W room heaters would be needed to balance the heat transfer due to conduction? (approximate number)arrow_forward1) The walls of a house are 16 cm thick and have an average thermal conductivity three times that of cork. The walls' surface area is 850000 cm and their inside surface is at 20°C, while their outside surface is at 7°C. (Thermal conductivity of cork is 0.036 W/m°C). Calculate, ) The rate of heat conduction through house walls: () The amount of heat conducted in Joules, in 4 min: 2) A spherical infrared heater of radius 6.5 cm and an emissivity of 0.72 radiates 0.58 kW of power. Given, Stefan's constant = 5.67x10 8 Wm-K4. Calculate. Temperature of the heater in Celsius:arrow_forwarda) A house walls that are 15 cm thick and have an average thermal conductivity four times that of glass wool. Assume there are no windows or doors. The walls' surface area is 950000 cm2 and their inside surface is at 23 °C, while their outside surface is at 4°C. (Thermal conductivity of glass wool is 0.042 W/m°C) 0 Calculate the rate of heat conduction through house walls? (ii) How many 150W room heaters would be needed to balance the heat transfer due to conduction? (approximate number) b) A spherical infrared heater of radius 5.15 cm has an emissivity of 0.75. What temperature must it run at if the required power is 0.38 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10 Wm 2K-4) The temperature of the heater in Celsius =arrow_forward
- (a) Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors. The surface area of the walls is 120 m2 and their inside surface is at 18.0ºC , while their outside surface is at 5.00ºC . (b) How many 1-kW room heaters would be needed to balance the heat transfer due to conduction?arrow_forwarda) A house walls that are 16 cm thick and have an average thermal conductivity three times that of cork. Assume there are no windows or doors. The walls' surface area is 1450000 cm² and their inside surface is at 18 °C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C) (1) Calculate the rate of heat conduction through house walls? (ii) How many 200oW room heaters would be needed to balance the heat transfer due to conduction? (approximate number) b) A spherical infrared heater of radius 6.2 cm has an emissivity of 0.71. What temperature must it run at if the required power is 0.5 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10-8 Wm- 2K-4) The temperature of the heater in Celsius =arrow_forwarda) A house walls that are 16 cm thick and have an average thermal conductivity three times that of cork. Assume there are no windows or doors. The walls' surface area is 1450000 cm² and their inside surface is at 18 °C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C) (1) Calculate the rate of heat conduction through house walls? (i) How many 200W room heaters would be needed to balance the heat transfer due to conduction? (approximate number) b) A spherical infrared heater of radius 6.2 cm has an emissivity of 0.71. What temperature must it run at if the required power is 0.5 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10-8 Wm- 2K-4) The temperature of the heater in Celsius =arrow_forward
- 1) The walls of a house are 11 cm thick and have an average thermal conductivity two times that of cork. The walls' surface area is 850000 cm2 and their inside surface is at 18°C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.036 W/m°C). Calculate, (i) The rate of heat conduction through house walls in Watts: (1) Amount of heat conducted in Joules, in 5 min: 2) A spherical infrared heater of radius 6.5 cm and an emissivity of 0.82 radiates 0.48 kW of power. Given, Stefan's constant = 5.67x10 Wm K Calculate, Temperature of the heater in Celsius: 1) A 275-turns square loop of 34 cm on a side, carrying a current of 22 A creates a torque of 385 N m when the plane of the coil makes an angle 38° with the magnetic field.arrow_forward(g) A 2 kW kettle containing 1.5 kg of water at 15°C is switched on for 5 minutes. i. How much heat energy is transferred? ii. What will be the temperature rise of the water? (Cwater = 4.2k] kg-1 K-') iii. What is the final temperature of the water?arrow_forwardA house walls that are 11 cm thick and have an average thermal conductivity two times that of cork. Assume there are no windows or doors. The walls' surface area is 1150000 cm and their inside surface is at 21°C, while their outside surface is at 7°C. (Thermal conductivity of cork is 0.042 W/m°C) () Calculate the rate of heat conduction through house walls in watt? (i) How many 400W room heaters would be needed to balance the heat transter due to conduction?(approximate number)arrow_forward
- a) A house walls that are 14 cm thick and have an average thermal conductivity four times that of glass wool. Assume there are no windows or doors. The walls' surface area is 1200000 cm2 and their inside surface is at 19°C, while their outside surface is at 5°C. (Thermal conductivity of glass wool 0.042 W/m°C) (i) Calculate the rate of heat conduction through house walls? (ii) How many 150W room heaters would be needed to balance the heat transfer due to conduction? (approximate number)arrow_forward1) The walls of a house are 16 cm thick and have an average thermal conductivity three times that of cork. The walls' surface area is 1350000 cm? and their inside surface is at 20°C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.036 W/m°C). Calculate, (i) The rate of heat conduction through house walls: (ii) The amount of heat conducted in Joules, in 6 min:arrow_forward(a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 5.00-g peanut if the energy from burning it is transferred to 0.500 kg of water held in a0.100-kg aluminum cup, causing a 54.9ºC temperature increase? (b) Compare your answer to labeling information found on a package of peanuts and comment on whether the values are consistent.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Heat Transfer: Crash Course Engineering #14; Author: CrashCourse;https://www.youtube.com/watch?v=YK7G6l_K6sA;License: Standard YouTube License, CC-BY