College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Chapter 12, Problem 105GP
Homes are often insulated with fiberglass insulation in their walls and ceiling. The thermal
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Homes are often insulated with fiberglass insulation in their walls and ceiling. The thermal conductivity of fiberglass is 0.040 W/m·K. Suppose that the total surface area of the walls and roof of a windowless house is 370 m2 and that the thickness of the insulation is 10 cm. At what rate does heat leave thehouse on a day when the outside temperature is 30°C colder than the inside temperature?
A classroom has dimensions 8.00 m x 10.00 m x 3.00 m. A 1000 W electric space
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the density of air is 1.29 kg/m°, and the specific heat capacity of air is 1004 J/(kg-K),
how long will it take to heat the room? Assume no loss of thermal energy to the
surroundings.
A) 1.30 minutes
B) 241 minutes
C) 45.3 minutes
O D) 77.7 minutes
Researchers are conducting a study to quantity the thermal conductivity of a composite material. A square box is made from 1932 cm2 sheets of the composite insulating material that is 5.2 cm thick. A 125 W heater is placed inside the box. Sensors attached to the box show that the interior and exterior surfaces of one face have reached the constant temperatures of 71°C and 23°C. What is the thermal conductivity in W/m-K?
Chapter 12 Solutions
College Physics: A Strategic Approach (3rd Edition)
Ch. 12 - Which has more mass, a mole of Ne gas or a mole of...Ch. 12 - If you launch a projectile upward with a high...Ch. 12 - Prob. 3CQCh. 12 - If you buy a sealed bag of potato chips in Miami...Ch. 12 - If you double the typical speed of the molecules...Ch. 12 - Two gases have the same number of molecules per...Ch. 12 - a. Which contains more particles, a mole of helium...Ch. 12 - If the temperature T of an ideal gas doubles, by...Ch. 12 - A bottle of helium gas and a bottle of argon gas...Ch. 12 - A gas cylinder contains 1.0 mol of helium at a...
Ch. 12 - Prob. 11CQCh. 12 - Prob. 12CQCh. 12 - What is the maximum amount of work that a gas can...Ch. 12 - You need to precisely measure the dimensions of a...Ch. 12 - A common trick for opening a stubborn lid on a jar...Ch. 12 - Your cars radiator is made of steel and is filled...Ch. 12 - Materials A and B have equal densities, but A has...Ch. 12 - Prob. 18CQCh. 12 - You need to raise the temperature of a gas by 10C....Ch. 12 - A sample of ideal gas is in a cylinder with a...Ch. 12 - A student is heating chocolate in a pan on the...Ch. 12 - If you bake a cake at high elevation, where...Ch. 12 - The specific heat of aluminum is higher than that...Ch. 12 - A student is asked to sketch a pV diagram for a...Ch. 12 - In some expensive cookware, the pot is made of...Ch. 12 - If you live somewhere with cold, clear nights, you...Ch. 12 - Prob. 27MCQCh. 12 - Prob. 28MCQCh. 12 - A gas is compressed by an isothermal process that...Ch. 12 - Prob. 30MCQCh. 12 - Prob. 31MCQCh. 12 - Prob. 32MCQCh. 12 - Prob. 33MCQCh. 12 - Prob. 34MCQCh. 12 - 100 g of ice at 0C and 100 g of steam at 100C...Ch. 12 - Suppose the 600 W of radiation emitted in a...Ch. 12 - Prob. 37MCQCh. 12 - Prob. 38MCQCh. 12 - Prob. 1PCh. 12 - How many grams of water (H2O) have the same number...Ch. 12 - Prob. 3PCh. 12 - How many cubic millimeters (mm3) are in 1 L?Ch. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - An ideal gas is at 20C. The gas is cooled,...Ch. 12 - An ideal gas at 0C consists of 1.0 1023 atoms. 10...Ch. 12 - An ideal gas at 20C consists of 2.2 1022 atoms....Ch. 12 - Dry ice is frozen carbon dioxide. If you have 1.0...Ch. 12 - Prob. 11PCh. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - When you stifle a sneeze, you can damage delicate...Ch. 12 - Prob. 15PCh. 12 - Mars has an atmosphere composed almost entirely of...Ch. 12 - 3.0 mol of gas at a temperature of 120C fills a...Ch. 12 - The lowest pressure ever obtained in a laboratory...Ch. 12 - Helium has the lowest condensation point of any...Ch. 12 - A cylinder contains 3.0 L of oxygen at 300 K and...Ch. 12 - A gas with initial conditions pi, Vi, and Ti...Ch. 12 - 0.10 mol of argon gas is admitted to an evacuated...Ch. 12 - 0.10 mol of argon gas is admitted to an evacuated...Ch. 12 - 0.10 mol of argon gas is admitted to an evacuated...Ch. 12 - 0.0040 mol of gas undergoes the process shown in...Ch. 12 - 0.0040 mol of gas follows the hyperbolic...Ch. 12 - A gas with an initial temperature of 900C...Ch. 12 - How much work is done on the gas in the process...Ch. 12 - It is possible to make a thermometer by sealing...Ch. 12 - A 1.0 cm3 air bubble is released from the sandy...Ch. 12 - A weather balloon rises through the atmosphere,...Ch. 12 - A straight rod consists of a 1.2-cm-long piece of...Ch. 12 - The length of a steel beam increases by 0.73 mm...Ch. 12 - The length of a steel beam increases by 0.73 mm...Ch. 12 - A circular hole in a steel plate is 2.000 cm in...Ch. 12 - At 20C, the hole in an aluminum ring is 2.500 cm...Ch. 12 - The temperature of an aluminum disk is increased...Ch. 12 - Prob. 38PCh. 12 - How much heat is needed to change 20 g of mercury...Ch. 12 - a. 100 J of heat energy are transferred to 20 g of...Ch. 12 - Prob. 41PCh. 12 - Prob. 42PCh. 12 - Alligators and other reptiles dont use enough...Ch. 12 - When air is inhaled, it quickly becomes saturated...Ch. 12 - Prob. 45PCh. 12 - What minimum heat is needed to bring 100 g of...Ch. 12 - 30 g of copper pellets are removed from a 300C...Ch. 12 - A copper block is removed from a 300C oven and...Ch. 12 - A 750 g aluminum pan is removed from the stove and...Ch. 12 - A 500 g metal sphere is heated to 300C, then...Ch. 12 - Brewed coffee is often too hot to drink right...Ch. 12 - Native Americans boiled water by adding very hot...Ch. 12 - Marianne really likes coffee, but on summer days...Ch. 12 - If a person has a dangerously high fever,...Ch. 12 - A container holds 1.0 g of argon at a pressure of...Ch. 12 - A container holds 1.0 g of oxygen at a pressure of...Ch. 12 - What is the temperature change of 1.0 mol of a...Ch. 12 - Prob. 58PCh. 12 - Adding 150 J of heat to 0.50 mol of a monatomic...Ch. 12 - Heating 2.5 mol of neon in a rigid container...Ch. 12 - A 1.8-cm-thick wood floor covers a 4.0 m 5.5 m...Ch. 12 - A stainless-steel-bottomed kettle, its bottom 24...Ch. 12 - What is the greatest possible rate of energy...Ch. 12 - What is the greatest possible rate of energy...Ch. 12 - Seals may cool themselves by using thermal...Ch. 12 - Electronics and inhabitants of the International...Ch. 12 - The glowing filament in a lamp is radiating energy...Ch. 12 - If you lie on the ground at night with no cover,...Ch. 12 - A college student is working on her physics...Ch. 12 - Prob. 70GPCh. 12 - A rigid container holds 2.0 mol of gas at a...Ch. 12 - A 15-cm-diameter compressed-air tank is 50 cm...Ch. 12 - Prob. 73GPCh. 12 - Prob. 74GPCh. 12 - Suppose you take and hold a deep breath on a...Ch. 12 - On average, each person in the industrialized...Ch. 12 - On a cool morning, when the temperature is 15C,...Ch. 12 - Suppose you inflate your car tires to 35 psi on a...Ch. 12 - Prob. 79GPCh. 12 - An empty flask is placed in boiling water for a...Ch. 12 - 80 J of work are done on the gas in the process...Ch. 12 - How much work is done by the gas in the process...Ch. 12 - Prob. 83GPCh. 12 - 10 g of dry ice (solid CO2) is placed in a 10,000...Ch. 12 - Prob. 85GPCh. 12 - A 5.0-m-diameter garden pond holds 5.9 103 kg of...Ch. 12 - 0.030 mol of an ideal monatomic gas undergoes an...Ch. 12 - James Joule (after whom the unit of energy is...Ch. 12 - Prob. 89GPCh. 12 - Prob. 90GPCh. 12 - A 68 kg woman cycles at a constant 15 km/h. All of...Ch. 12 - Prob. 92GPCh. 12 - Prob. 93GPCh. 12 - What is the maximum mass of lead you could melt...Ch. 12 - An experiment measures the temperature of a 200 g...Ch. 12 - 10 g of aluminum at 200C and 20 g of copper are...Ch. 12 - A 100 g ice cube at 10C is placed in an aluminum...Ch. 12 - Prob. 98GPCh. 12 - Your 300 mL cup of coffee is too hot to drink when...Ch. 12 - A gas is compressed from 600 cm3 to 200 cm3 at a...Ch. 12 - An expandable cube, initially 20 cm on each side,...Ch. 12 - 0.10 mol of a monatomic gas follows the process...Ch. 12 - A monatomic gas follows the process 123 shown in...Ch. 12 - What are (a) the heat QH extracted from the hot...Ch. 12 - Homes are often insulated with fiberglass...Ch. 12 - The top layer of your goose down sleeping bag has...Ch. 12 - Suppose you go outside in your fiber-filled jacket...Ch. 12 - The surface area of an adult human is about 1.8...Ch. 12 - MCAT-Style Passage Problems Thermal Properties of...Ch. 12 - MCAT-Style Passage Problems Thermal Properties of...Ch. 12 - MCAT-Style Passage Problems Thermal Properties of...Ch. 12 - MCAT-Style Passage Problems Thermal Properties of...
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