Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 5, Problem 38Q
To determine
Whether a heat pump operating during winters violates the law of conservation of energy or not.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Find the amount of heat that is required to warm 120 kg of water for you bath by 22 ∘C.
Express your answer to three significant figures and include the appropriate units.
This is all I was given for this problem, so I am also confused. I'm glad your expert is also confused, makes me feel 10X better.
An inventor develops a stationary cycling device by which an individual, while pedaling, can convert all of the energy expended into heat for warming water. How much mechanical energy is required to increase the temperature of 300 g of water (enough for one cup of coffee) from 20 deg C to 95 deg C? (Water has a specific heat of 4186 J/kg deg C.)
A mediocre cyclist can produce 131 J of energy per second. How long (in minutes) would it take this cyclist to heat the cup of water in the previous problem for hot chocolate?
Some amount of heat energy is removed from a 16cm X 26cm X
28cm block of ice to cool from 0°C to -28°C. (Hint: to find mass, use
the relation between, density, mass and volume) ((a*2)+(b*1)+
(c*2) = 5marks)
Calculate the following:
a) The mas of ice cube in grams
(density of ice = 920 kg/m³).
b) The temperature difference in kelvin
b) The energy removed from ice in calories
. (specific heat of ice = 2093 J/kg°C)
%3D
Chapter 5 Solutions
Inquiry into Physics
Ch. 5 - Explain why the Moon and Mercury possess only very...Ch. 5 - The dwarf planet Pluto has an average surface...Ch. 5 - Prob. 1AACh. 5 - Prob. 2AACh. 5 - Discuss some of the early developments in the...Ch. 5 - Prob. 2PIPCh. 5 - In Section 5.2, we discussed the phenomenon of...Ch. 5 - Prob. 2MIOCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 2Q
Ch. 5 - Prob. 3QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 7QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 9QCh. 5 - Prob. 10QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 14QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 18QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 1PCh. 5 - On a nice winter day at the South Pole, the...Ch. 5 - An iron railroad rail is 700 ft long when the...Ch. 5 - A copper vat is 10 m long at room temperature...Ch. 5 - A machinist wishes to insert a steel rod with a...Ch. 5 - An aluminum wing on a passenger is 30 m long when...Ch. 5 - A fixed amount of a particular ideal gas at 16C°...Ch. 5 - em>. The volume of an ideal gas enclosed in a...Ch. 5 - A gas is compressed inside a cylinder (Figure...Ch. 5 - Prob. 10PCh. 5 - . How much heat is needed to raise the temperature...Ch. 5 - Prob. 12PCh. 5 - - (a) Compute the amount of heat needed to raise...Ch. 5 - Prob. 14PCh. 5 - . A 1,200-kg car going 25 m/s is brought to a stop...Ch. 5 - Prob. 16PCh. 5 - Prob. 17PCh. 5 - Prob. 18PCh. 5 - . On a winter day, the air temperature is — 15°C,...Ch. 5 - . On a summer day in Houston, the temperature is...Ch. 5 - . Inside a building, the temperature is 20°C, and...Ch. 5 - . On a hot summer day in Washington, D.C., the...Ch. 5 - . An apartment has the dimensions 10 in 1w 5 in 3...Ch. 5 - Prob. 24PCh. 5 - . The temperature of the air in thermals decreases...Ch. 5 - In cold weather, you can sometimes "see" your...Ch. 5 - . What is the Carnot efficiency of a heat engine...Ch. 5 - . What is the maximum efficiency that a hear...Ch. 5 - . As a gasoline engine is miming, an amount of...Ch. 5 - . A proposed ocean thermal-energy conversion...Ch. 5 - . An irreversible process takes place by which the...Ch. 5 - . The temperature in the deep interiors of some...Ch. 5 - Prob. 1CCh. 5 - Pyrex g1assware is noted for its ability to...Ch. 5 - Prob. 3CCh. 5 - As air rises in the atmosphere, its temperature...Ch. 5 - . 5. If air at 35°C and 77 percent relative...Ch. 5 - Prob. 6C
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
- Problem 1.42. The specific heat capacity of Albertson's Rotini Tricolore is ap- proximately 1.8 J/g °C. Suppose you toss 340 g of this pasta (at 25°C) into 1.5 liters of boiling water. What effect does this have on the temperature of the water (before there is time for the stove to provide more heat)?arrow_forwardThe human body, while at rest, produces heat energy at a rate of about 116 W. How much sweat (in g) must evaporate every minute from their skin to carry away this excess energy? (Note: according to your book, the latent heat of vaporization of water at body temperature is 2.43 * 106 J/kg).arrow_forwardAn energetic athlete can use up all the energy from a diet of 4000 Cal/day. If he were to use up this energy at a steady rate, what is the ratio of the rate of energy use compared to that of a 100 W bulb? (The power of 100 W is the rate at which the bulb converts electrical energy to heat and the energy of visible light.)arrow_forward
- Only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up theside of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 Joulesarrow_forwardSome amount of heat energy is removed from a 5cm X 12cm X 37cm block of ice to cool from 0ºC to -24ºC. (Hint: to find mass, use the relation between, density, mass and volume) ((a*2)+(b*1)+(c*2) = 5marks) Calculate the following: a) The mas of ice cube in grams Answer for part 1 (density of ice = 920 kg/m3). b) The temperature difference in kelvin Answer for part 2 b) The energy removed from ice in calories Answer for part 3 . (specific heat of ice = 2093 J/kgºC)arrow_forwardAn electric shower has a 1.5 kW heating element. (a).How much heat energy can it give out in five minutes? (b).If the element is used to heat 5 kg of water for 5 minutes, what would be the rise in temperature? (Specific heat capacity of water = 4180 J/kg).arrow_forward
- The human body is not perfectly efficient. In fact, only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up the side of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 Joulesarrow_forwardSome amount of heat energy is removed from a 6cm X 10cm X 25cm block of ice to cool from 0°C to -16°C. (Hint: to find mass, use the relation between, density, mass and volume) ((a*2)+(b*1)+(c*2) = %3D Calculate the following: a) The mas of ice cube in grams (density of ice = 920 kg/m3). b) The temperature difference in kelvin b) The energy removed from ice in calories · (specific heat of ice = 2093 J/kg°C)arrow_forwardA person consumes about 2600 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal. What is this energy in kilowatt-hours? Express your answer using two significant figures.arrow_forward
- Please provide complete step by step answer: A customer orders 200ml of Sumatran coffee at precisely 60.0°C. You then need to drop the temperature of the coffee, initially at 90.0°C, to the ordered temperature. In order to simplify the calculations, you will start by assuming that coffee has the specific heat and density as if water. In the following parts, you will remove these simplifications. Solve now this problem assuming the density is 1.000 g/ml for coffee and its specific heat capacity is 4.184 J/(g ºC). If you had used ice cubes to cool the coffee, your calculation of q would have been a two- step process: (1) the ice at 0 oC first has to melt (energy added to go from solid to liquid; and then (2) to warm the liquid from 0 oC to the final temperature where q = mice cice + mwater cwater ∆T where cice = 2.11 J/ g . oC cwater = 4.184 J/ g . oC (Note: there is no ∆T for the first step since melting of the ice occurs at 0 oC, no temperature change) What…arrow_forwardAn electric heater transfers 9.20 ✕ 105 J into a block of ice with a mass of 2.35 kg and an initial temperature of 0°C. (a) How much of the energy (in J) supplied by the heater goes into melting all the ice into liquid water? (Enter your answer to at least three significant figures.) Review the definition of latent heat of fusion. How is the energy related to the mass and latent heat? J (b) How much of the energy (in J) supplied by the heater goes into raising the temperature of the liquid water? (Enter your answer to at least three significant figures.) Think about conservation of energy. The total energy supplied is known, and you found in part (a) the energy that goes into melting. How much is left over? J (c) What is the final temperature of the liquid water in degrees Celsius? °Carrow_forwardProblem 1.28. Estimate how long it should take to bring a cup of water to boiling temperature in a typical 600-watt microwave oven, assuming that all the energy ends up in the water. (Assume any reasonable initial temperature for the water.) Explain why no heat is involved in this process.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON