Physics: Principles with Applications
7th Edition
ISBN: 9780321625922
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 14, Problem 41P
Two rooms, each a cube 4.0 m per side, share a 14-cm-thick brick wall. Because of a number of 100-W lightbulbs in one room, the air is at 30DC, while in the other room it is at 10°C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A bulb delivers 33 W of radiant energy when its filament is at 1900 °C . If the temperature increases by 100 °C , what is the new rate of energy radiated by this bulb?
O 39.51 W
36.11 W
O 27.56 W
O 40.52 W
The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0.
The temperature of the filament is 3×1000°C. What should be the length of the
filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann
constant is 5.670 × 10-8 W/m2 · K4. Please give your answer with 3 decimal
places.
A family comes home from a long vacation with laundry to do and showers to take. The water heater has been turned off during vacation. If the water heater has a capacity of 51.3 gallons and a 4940 W heating element, how much time is required to raise the temperature of the water from 19.4°C to 63.3°C? Assume that the heater is well insulated and no water is withdrawn from the tank during this time.
Chapter 14 Solutions
Physics: Principles with Applications
Ch. 14 - Prob. 1OQCh. 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. 9Q
Ch. 14 - Prob. 10QCh. 14 - 11. Explorers on failed Arctic expeditions have...Ch. 14 - Prob. 12QCh. 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 - A premature baby in an incubator can be...Ch. 14 - Prob. 23QCh. 14 - Prob. 24QCh. 14 - Prob. 25QCh. 14 - 26. The Earth cools off at night much more quickly...Ch. 14 - Prob. 27QCh. 14 - Prob. 28QCh. 14 - Prob. 29QCh. 14 - Prob. 1MCQCh. 14 - Both beakers A and B in Fig. 14-15 [ contain a...Ch. 14 - 3. For objects at thermal equilibrium, which of...Ch. 14 - Prob. 4MCQCh. 14 - Prob. 5MCQCh. 14 - Prob. 6MCQCh. 14 - Prob. 7MCQCh. 14 - Prob. 8MCQCh. 14 - Prob. 9MCQCh. 14 - Prob. 10MCQCh. 14 - Prob. 11MCQCh. 14 - Prob. 12MCQCh. 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 - How long does it take a 750-W coffeepot to bring...Ch. 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. 17PCh. 14 - The heat capacity, C, ofan object is defined as...Ch. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Estimate the Calorie content of 65 g of candy from...Ch. 14 - Prob. 23PCh. 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. 26PCh. 14 - What mass of steam at 100°C must be added to 1.00...Ch. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - Prob. 33PCh. 14 - A cube of ice is taken from the freezer at -8.5°C...Ch. 14 - Prob. 35PCh. 14 - Prob. 36PCh. 14 - Prob. 37PCh. 14 - Prob. 38PCh. 14 - 39. How long does it take the Sun to melt a block...Ch. 14 - Prob. 40PCh. 14 - Two rooms, each a cube 4.0 m per side, share a...Ch. 14 - Prob. 42PCh. 14 - Approximately how long should it take 8.2 kg of...Ch. 14 - Prob. 44PCh. 14 - Suppose the insulating qualities of the wall of a...Ch. 14 - Prob. 46GPCh. 14 - (a) Estimate the total power radiated into space...Ch. 14 - Prob. 48GPCh. 14 - Prob. 49GPCh. 14 - A mountain climber wears a goose-down jacket 3.5...Ch. 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 - A leaf of area 40 cm2and mass 4.5 x 10-4kg...Ch. 14 - Prob. 66GPCh. 14 - Prob. 67GPCh. 14 - Prob. 68GP
Additional Science Textbook Solutions
Find more solutions based on key concepts
9.35 A compound disk of outside diameter 140.0 cm is made up of a uniform solid disk of radius 50.0 cm and area...
University Physics (14th Edition)
19. || A batted baseball leaves the bat at an angle of 30.0° above the horizontal and is caught by an outfielde...
College Physics (10th Edition)
The working of thermostat in the stadium.
College Physics: A Strategic Approach (3rd Edition)
What is the practical reason for the yellow-green color of tennis balls and fire engines?
Conceptual Integrated Science
The electromagnetic spectrum of light is often arranged in terms of frequency. Which one of the following has t...
Lecture- Tutorials for Introductory Astronomy
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective (8th 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
- The surface area of an unclothed person is 1.50 m2, and his skin temperature is 33.0C. The person is located in a dark room with a temperature of 20.0C, and the emissivity of the skin is e = 0.95. (a) At what rate is energy radiated by the body? (b) What is the significance of the sign of your answer?arrow_forwardA classroom has dimensions 8.00 m x 10.00 m x 3.00 m. A 1000 W electric space heater is being used to warm the room from 5.00°C to 20.00°C on a cold morning. If 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 minutesarrow_forwardTwo rooms, each a cube 4.0m per side share a 14 Cm thick brick wall. Because of a number of 100 W light bulbs in one room the air is at 30 degree Celsius while in the other room it is 10 degree Celsius. How many of the 100 W bulbs are needed to maintain the temperature difference across the wall?arrow_forward
- A student is trying to decide what to wear.His bedroom is at 20.0 degrees Celcius.His skin Temperature is 25 degrees Celsius.The area of his exposed skin is 1.50 square mitres.People all over the world have dark skin with emessivity about 0.900.Find the net energy transfer from his body by radiation in 10.0 minutesarrow_forwardAn electric coffeemaker has a 610-W heating element. The specific heat of water is 4.19 × 103 J/(kg⋅°C). How long, in seconds, does it take the coffeemaker to heat 0.76 L of water from 18°C to 88°C, assuming all the heat produced by the heating element goes into the water?arrow_forwardA family comes home from a long vacation with laundry to do and showers to take. The water heater has been turned off during the vacation. If the heater has a capacity of 50.0 gallons and a 4800-W heating element, how much time is required to raise the temperature of the water from 20.0°C to 60.0°C? Assume the heater is well insulated and no water is withdrawn from the tank during that time.arrow_forward
- You are insulating a metal pipe carrying a hot fluid. The outside Diameter of the pipe is 3.5 cm, and the pipe has a length of 7.7 meters. Due to the fluid inside the pipe, the outside surface of the metal fluid pipe is kept at a constant temperature of 85.0°C. The metal pipe is inserted inside of a thin-wall circular tube, which has an inside diameter of 11.2 cm (ignore the resistance of the thin-wall circular tube). The space between the outside of the hot metal pipe and the inside of the thin-wall circular tube is filled with foam insulation, k = 0.036 W/m-K. The outside of the thin-walled circular tube is kept at a constant temperature of 28.0°C. Due to a manufacturing error, the metal pipe was not centered inside the thin-wall tube when the foam insulation was added, but was instead installed with an eccentricity of 2.0 cm (i.e. the center of the metal pipe is 2.0 cm distance from the center of the thin-walled circular tube). Calculate the increase in the heat transfer rate due to…arrow_forwardA family comes home from a long vacation with laundry to do and showers to take. The water heater has been turned off during the vacation. If the heater has a capacity of 50.0 gallons and a 5,900-W heating element, how much time is required to raise the temperature of the water from 20.0°C to 57.0°C? Assume the heater is well insulated and no water is withdrawn from the tank during that time. Additional Materials eBookarrow_forwardTwo rooms, each a cube 4 m per side, share a 12-cm thick brick wall. Because of a number of 100-W lightbulbs in one room, the air is at 30 deg C, while in the other room it is at 10 deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall? kbrick = 0.84 W/m.K Round your answer to 2 decimal places.arrow_forward
- An electric immersion heater has a power rating of 1800 W. If the heater is placed in a 1.3 kg of water at 30 °C, how many minutes will it take to bring the water to a boiling temperature? (Assume that there is no heat loss except to the water itself. water=4186 J/kg.°C)arrow_forwardA 50 liter hot-water tank is used in the laundry service of a hospital clinic. The water in the tank is heated up using an electrical heater that is operated from 200V (mains) power line. The heater draws 8,2 A from the mains. Assume that the thermal resistance of the tank is Rt=0.04 ℃/W. The temperature of the tap water is 10℃. Maximum temperature of the water in the tank in the steady state is …. ?arrow_forwardThe tungsten filament of a light bulb has an operating temperature of about 2100 K. If the emitting area of the filament is 1.0 cm2, and its emissivity is 0.68, what is the power output of the light bulb? (s = 5.67×10-8 W/m2×K4) A. 100 W B. 75 W C. 60 W D. None of the abovearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
A Level Physics – Ideal Gas Equation; Author: Atomi;https://www.youtube.com/watch?v=k0EFrmah7h0;License: Standard YouTube License, CC-BY