University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 17, Problem 17.117PP
Careful measurements show that the specific heat of the solid phase depends on temperature (Fig. P17.117). How will the actual time needed for this cryoprotectant to come to equilibrium with the cold plate compare with the time predicted by using the values in the table? Assume that all values other than the specific heat (solid) are correct. The actual time (a) will be shorter; (b) will be longer; (c) will be the same; (d) depends on the density of the cryoprotectant.
Figure P17.117
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A square steel bar of side length w = 0.13 m has a thermal conductivity of k = 14 J/(s⋅m⋅°C) and is L = 2.1 m long. One end is placed near a blowtorch so that the temperature is T1 = 78° C while the other end rests on a block of ice so that the temperature is a constant T2.
(a) Input an expression for the heat transferred to the cold end of the bar as a function of time, using A = w2 as the cross-sectional area of the bar.
(b) How much energy, in joules, was conducted in 1 hour, assuming T2 = 0° C?
(c) Input an expression for the mass of the water melted in 1 hour using Q1 from above and Lf the latent heat of fusion.
A building science major is investigating energy loss through windows. The windowpane of interest is 0.950 cm thick, has dimensions of 0.88 m ✕ 2.30 m, and has a thermal conductivity of 0.8 W/(m · °C). On a given cold day, the outside temperature is 0°C and the temperature of the interior surface of the glass is 28.0°C.
(a)Determine the rate (in W) at which heat energy is transferred through the window.
Answer- W
(b)Determine the amount of energy (in J) transferred through the window in one day, assuming the temperature on the surfaces remains constant.
Answer- J
A square steel bar of side length w = 0.14 m has a thermal conductivity of k = 14.1 J/(s⋅m⋅°C) and is L = 2.4 m long. Once end is placed near a blowtorch so that the temperature is T1 = 77° C while the other end rests on a block of ice so that the temperature is a constant T2.
a) Input an expression for the heat transferred to the cold end of the bar as a function of time, using A = w2 as the cross-sectional area of the bar.
Q(t)=
b) Input an expression for the mass of the water melted in 1 hour using Q1 from above and Lf the latent heat of fusion.
mw=
Chapter 17 Solutions
University Physics (14th Edition)
Ch. 17 - Explain why it would not make sense to use a...Ch. 17 - If you heat the air inside a rigid, scaled...Ch. 17 - Many automobile engines have cast-iron cylinders...Ch. 17 - Why do frozen water pipes burst? Would a mercury...Ch. 17 - Two bodies made of the same material have the same...Ch. 17 - Why is it sometimes possible to loosen caps on...Ch. 17 - The inside of an oven is at a temperature of 200C...Ch. 17 - A newspaper article about the weather states that...Ch. 17 - A student asserts that a suitable unit for...Ch. 17 - Prob. Q17.10DQ
Ch. 17 - The units of specific heat c are J/kg K, but the...Ch. 17 - Why is a hot, humid day in the tropics generally...Ch. 17 - A piece of aluminum foil used to wrap a potato for...Ch. 17 - Desert travelers sometimes keep water in a canvas...Ch. 17 - When you first step out of the shower, you feel...Ch. 17 - The climate of regions adjacent to large bodies of...Ch. 17 - When water is placed in ice-cube trays in a...Ch. 17 - Before giving you an injection, a physician swabs...Ch. 17 - A cold block of metal feels colder than a block of...Ch. 17 - A person pours a cup of hot coffee, intending to...Ch. 17 - When a freshly baked apple pie has just been...Ch. 17 - Old-time kitchen lore suggests that things cook...Ch. 17 - In coastal regions in the winter, the temperature...Ch. 17 - It is well known that a potato bakes faster if a...Ch. 17 - Glider pilots in the Midwest know that thermal...Ch. 17 - Some folks claim that ice cubes freeze faster if...Ch. 17 - Were lucky that the earth isnt in thermal...Ch. 17 - Prob. Q17.28DQCh. 17 - Convert the following Celsius temperatures to...Ch. 17 - BIO Temperatures in Biomedicine. (a) Normal body...Ch. 17 - Prob. 17.3ECh. 17 - (a) Calculate the one temperature at which...Ch. 17 - You put a bottle of soft drink in a refrigerator...Ch. 17 - Prob. 17.6ECh. 17 - The pressure of a gas at the triple point of water...Ch. 17 - Prob. 17.8ECh. 17 - Prob. 17.9ECh. 17 - Prob. 17.10ECh. 17 - The Humber Bridge in England has the worlds...Ch. 17 - One of the tallest buildings in the world is the...Ch. 17 - A U.S. penny has a diameter of 1.9000 cm at 20.0C....Ch. 17 - Ensuring a Tight Fit. Aluminum rivets used in...Ch. 17 - A copper cylinder is initially at 20.0C. At what...Ch. 17 - A geodesic dome constructed with an aluminum...Ch. 17 - A glass flask whose volume is 1000.00 cm3 at 0.0C...Ch. 17 - A steel tank is completely filled with 1.90 m3 of...Ch. 17 - A machinist bores a hole of diameter 1.35 cm in a...Ch. 17 - As a new mechanical engineer for Engines Inc., you...Ch. 17 - Steel train rails are laid in 12.0-m-long segments...Ch. 17 - A brass rod is 185 cm long and 1.60 cm in...Ch. 17 - An aluminum tea kettle with mass 1.10 kg and...Ch. 17 - In an effort to stay awake for an all-night study...Ch. 17 - Prob. 17.25ECh. 17 - BIO Heat Loss During Breathing. In very cold...Ch. 17 - You are given a sample of metal and asked to...Ch. 17 - On-Demand Water Heaters. Conventional hot-water...Ch. 17 - Prob. 17.29ECh. 17 - Prob. 17.30ECh. 17 - CP A nail driven into a board increases in...Ch. 17 - A technician measures the specific heat of an...Ch. 17 - CP A 15.0-g bullet traveling horizontally at 865...Ch. 17 - You have 750 g of water at 10.0C in a large...Ch. 17 - Prob. 17.35ECh. 17 - BIO Treatment for a Stroke. One suggested...Ch. 17 - A blacksmith cools a 1.20-kg chunk of iron,...Ch. 17 - A copper calorimeter can with mass 0.100 kg...Ch. 17 - A copper pot with a mass of 0.500 kg contains...Ch. 17 - In a container of negligible mass, 0.200 kg of ice...Ch. 17 - Prob. 17.41ECh. 17 - BIO Before going in for his annual physical, a...Ch. 17 - Prob. 17.43ECh. 17 - Prob. 17.44ECh. 17 - How much heat is required to convert 18.0 g of ice...Ch. 17 - An open container holds 0.550 kg of ice at 15.0C....Ch. 17 - CP What must the initial speed of a lead bullet be...Ch. 17 - BIO Steam Burns Versus Water Burns. What is the...Ch. 17 - BIO The Ship of the Desert. Camels require very...Ch. 17 - BIO Evaporation of sweat is an important mechanism...Ch. 17 - CP An asteroid with a diameter of 10 km and a mass...Ch. 17 - A laboratory technician drops a 0.0850-kg sample...Ch. 17 - An insulated beaker with negligible mass contains...Ch. 17 - A 4.00-kg silver ingot is taken from a furnace,...Ch. 17 - A vessel whose walls are thermally insulated...Ch. 17 - Two rods, one made of brass and the other made of...Ch. 17 - Suppose that the rod in Fig. 17.24a is made of...Ch. 17 - One end of an insulated metal rod is maintained at...Ch. 17 - A carpenter builds an exterior house wall with a...Ch. 17 - An electric kitchen range has a total wall area of...Ch. 17 - BIO Conduction Through the Skin. The blood plays...Ch. 17 - A long rod, insulated to prevent heat loss along...Ch. 17 - A pot with a steel bottom 8.50 mm thick rests on a...Ch. 17 - You are asked to design a cylindrical steel rod...Ch. 17 - A picture window has dimensions of 1.40 m 2.50 m...Ch. 17 - Prob. 17.66ECh. 17 - A spherical pot contains 0.75 L of hot coffee...Ch. 17 - The emissivity of tungsten is 0.350. A tungsten...Ch. 17 - Size of a Light-Bulb Filament. The operating...Ch. 17 - The Sizes of Stars. The hot glowing surfaces of...Ch. 17 - CP A Foucault pendulum consists of a brass sphere...Ch. 17 - Suppose that a steel hoop could be constructed to...Ch. 17 - You propose a new temperature scale with...Ch. 17 - CP CALC A 250-kg weight is hanging from the...Ch. 17 - You are making pesto for your pasta and have a...Ch. 17 - A surveyors 30.0-m steel tape is correct at 20.0C....Ch. 17 - A metal rod that is 30.0 cm long expands by 0.0650...Ch. 17 - On a cool (4.0C) Saturday morning, a pilot fills...Ch. 17 - (a) Equation (17.12) gives the stress required to...Ch. 17 - CP A metal wire, with density and Youngs modulus...Ch. 17 - A steel ring with a 2.5000-in. inside diameter at...Ch. 17 - BIO Doughnuts: Breakfast of Champions! Atypical...Ch. 17 - BIO Shivering. Shivering is your bodys way of...Ch. 17 - You cool a 100.0-g slug of red-hot iron...Ch. 17 - CALC Debyes T3 Law. At very low temperatures the...Ch. 17 - CP A person of mass 70.0 kg is sitting in the...Ch. 17 - Hot Air in a Physics Lecture. (a) A typical...Ch. 17 - CALC The molar heat capacity of a certain...Ch. 17 - Prob. 17.89PCh. 17 - BIO Overheating. (a) By how much would the body...Ch. 17 - BIO A Thermodynamic Process in an Insect. The...Ch. 17 - Hot Water Versus Steam Heating. In a household...Ch. 17 - You have 1.50 kg of water at 28.0C in an insulated...Ch. 17 - A thirsty nurse cools a 2.00-L bottle of a soft...Ch. 17 - Prob. 17.95PCh. 17 - A Styrofoam bucket of negligible mass contains...Ch. 17 - In a container of negligible mass, 0.0400 kg of...Ch. 17 - Prob. 17.98PCh. 17 - Effect of a Window in a Door. A carpenter builds a...Ch. 17 - One experimental method of measuring an insulating...Ch. 17 - Compute the ratio of the rate of heat loss through...Ch. 17 - Rods of copper, brass, and steeleach with...Ch. 17 - A brass rod 12.0 cm long, a copper rod 18.0 cm...Ch. 17 - BIO Basal Metabolic Rate. The basal metabolic rate...Ch. 17 - Prob. 17.105PCh. 17 - Prob. 17.106PCh. 17 - A Thermos for Liquid Helium. A physicist uses a...Ch. 17 - A metal sphere with radius 3.20 cm is suspended in...Ch. 17 - Prob. 17.109PCh. 17 - The icecaps of Greenland and Antarctica contain...Ch. 17 - DATA As a physicist, yon put heat into a 500.0-g...Ch. 17 - DATA At a chemical plant where you are an...Ch. 17 - DATA During your mechanical engineering...Ch. 17 - Prob. 17.114CPCh. 17 - A hollow cylinder has length L, inner radius a,...Ch. 17 - You place 35 g of this cryoprotectant at 22C in...Ch. 17 - Careful measurements show that the specific heat...Ch. 17 - In another experiment, you place a layer of this...Ch. 17 - To measure the specific heat in the liquid phase...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Write each number in decimal form.
35. 8.4 × 10–6
Applied Physics (11th Edition)
The angular displacement of the car.
Physics (5th Edition)
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) desi...
Cosmic Perspective Fundamentals
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
Show that the magnetic field at a distance r from the axis of two circular parallel plates, produced by placing...
University Physics Volume 2
4. (a) If the forces on an object balance, do the torques necessarily balance? (b) If the torques on an object ...
College Physics (10th 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 north wall of an electrically heated home is 20 ft long, 10 ft high, and 1 ft thick, and is made of brick whose thermal conductivity is k = 0.42 Btu/h·ft·°F. On a certain winter night, the temperatures of the inner and the outer surfaces of the wall are measured to be at about 62°F and 25°F, respectively, for a period of 8 h. Determine (a) the rate of heat loss through the wall that night and (b) the cost of that heat loss to the home owner if the cost of electricity is $0.07/kWh.arrow_forwardTo illustrate the effect of ice on the aluminum cooling plate, consider the drawing shown here and the data that it contains. Ignore any limitaions due to significant figures. How much heat per second per square meter is conducted through the ice-aluminum combination and through the aluminum by itself? combination: 6580 J/(s m2), aluminum only: 6580 J/(s m2) combination: 2400000 J/(s m2), aluminum only: 2400000 J/(s m2) combination: 2400000 J/(s m2), aluminum only: 6580 J/(s m2) combination: 6580 J/(s m2), aluminum only: 2400000 J/(s m2)arrow_forwardAn Audi A4 (2016-2019) has a fuel tank capacity of 63 L. The steel gasoline tank is when full, both the tank and the gasoline have a temperature of 15.0ºC. How much gasoline has spilled by the time they warm to 45.0ºC?arrow_forward
- A long iron rod (r = 7870 kg/m3, cp = 447 J/kg·K,k = 80.2 W/m·K, and a = 23.1 * 10–6 m2/s) with diameter of25 mm is initially heated to a uniform temperature of 700°C.The iron rod is then quenched in a large water bath that is maintained at constant temperature of 50°C and convection heat transfer coefficient of 128 W/m2·K. Determine the time required for the iron rod surface temperature to cool to 200°C. Solve this problem using analytical one-term approximation method (not the Heisler charts).arrow_forwardA thermos contains m1=0.81kg of tea at T1=26 degrees Celcius. Ice (m2=0.065kg, T2=0 degrees celcius) is added to it. The heat capacity of both water and tea is c=4186J/(kg*K), and the latent heat of fusion for water is Lf=33.5x10^4 J/kg. a.) Find an expression for the final temperature after the ice has melted and the system has reached thermal equilibirum. b.) What is the final teperature in K.arrow_forwardA test is conducted to determine the overall heat transfer coefficient in a shell-and-tube oil-to-water heat exchanger that has 24 tubes of internal diameter 1.2 cm and length 2 m in a single shell. Cold water (cp = 4180 J/kg·K) enters the tubes at 20°C at a rate of 3 kg/s and leaves at 55°C. Oil (cp = 2150 J/kg·K) flows through the shell and is cooled from 120°C to 45°C. Determine the overall heat transfer coefficient Ui of this heat exchanger based on the inner surface area of the tubes.arrow_forward
- Thank u! A copper rod has one end in ice at a temperature of O°C, the other in boiling water. The length and diameter of the rod are 1.80 m and 3.90 cm, respectively. At what rate in grams per hour does the ice melt? Assume no heat flows out the sides of the rod. Thermal conductivity of copper is 401 W/(m-K). Latent heat of fusion for water, Lf= 333.7 J/g. Water boils at 100°Carrow_forwardHow much total heat transfer is necessary to lower the temperature of 0.215 kg0.215 kg of steam from 133.5 ∘C133.5 ∘C to −23.5 ∘C,−23.5 ∘C, including the energy for phase changes? How much time is required for each stage of this process, assuming a constant 875.0 W875.0 W rate of heat exchange? Give the times in the order that the stages occur.arrow_forwardA glass window in a home is 0.62cm thick and has dimensions of 1 m x 2 m. On a certain day, the temperature of the interior surface of the glass is 25ºC and the exterior surface temperature is 0ºC. The rate at which energy is transferred by heat through the glass is __ W (hint: k for glass is 0.8 J/msºC, answer in watts ) The energy transferred through the window in one day, assuming the temperatures on the surfaces remain constant, is __ J.arrow_forward
- A 2.0-kg aluminum block is originally at 10 degrees celcius. If 36 kJ of energy are added to the block, what is its final temperature (in Kelvin)? The specific heat of aluminum is 900 J/kg K The answer (in fundamental SI unit) is ___________ (type the numeric value only)arrow_forwardSeveral ice cubes (ρi = 0.9167 g/cm3) of total volume Vi = 225 cm3 and temperature 273.15 K (0.000 °C) are put into a thermos containing Vt = 660 cm3 of tea at a temperature of 313.15 K, completely filling the thermos. The lid is then put on the thermos to close it. Assume that the density and the specific heat of the tea is the same as it is for fresh water (ρw = 1.00 g/cm3, c = 4186 J/kgK). A: Calculate the amount of heat energy Qm in J needed to melt the ice cubes (Lf = 334 kJ/kg). B: Calculate the equilibrium temperature TE in K of the final mixture of tea and water. C: Calculate the magnitude of the total heat transferred QT in J from the tea to the ice cubes.arrow_forwardThe average thermal conductivity of the walls (including windows) and roof of a house in Figure P11.46 is 4.8 x 10-4 kW/m .°C, and their average thickness is 21.0 cm. The house is heated with natural gas, with a heat of combustion (energy released per cubic meter of gas burned) of 9300 kcal/m3. How many cubic meters of gas must be burned each day to maintain an inside temperature of 25.0°C if the outside temperature is 0.0°C? Disregard surface air layers, radiation, and energy loss by heat through the ground.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher: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