When a cake is removed from an oven, it has a temperature of 150 ° C and three minutes later reaches 94 ° C. How long will the cake take to cool down so that it can be eaten by guests at 25 ° C, if room temperature is it 21 ° C?

When a cake is removed from an oven, it has a temperature of 150 ° C and three minutes later reaches 94 ° C. How long will the cake take to cool down so that it can be eaten by guests at 25 ° C, if room temperature is it 21 ° C?

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter11: Temperature And Temperature- Related Variables In Engineering

Section: Chapter Questions

Problem 16P

See similar textbooks

Related questions

Q: Water storage and conversation in Ladakh by traditional and modern

A: Water storage and conservation is one of the major issues which is faced on fragile terrain such as…

Q: A hot pie that was cooked at a constant temperature of 325° F is taken directly from an oven and…

Q: A well-insulated and perfectly sealed room is installed with 4-hp fan to circulate air for 1.5…

Q: Figure shows a house whose walls consist of plaster (R = 0.45), R-11 fiberglass insulation, plywood…

A: Consider the given data R=0.45 For plasterR=0.65 For plywoodR=0.55 For Cadar shinglesAvg.…

Q: What is the equivalent value of T = 50° C in degrees Fahrenheit, degrees Rankine, and kelvins?

A: Given- T = 50° C

Q: The brewing pot temperature of coffee is 180° F. and the room termperature is 76° F. After 5…

A: Newtons law of cooling:

Q: What is the thermometer reading at 3:20AM. a. What is the value of the constant of proportionality?…

A: This question is from the topic of newtons law of cooling

Q: Jim is cooking sopas (chicken noodle soup) for Noche Buena. He finished early in the afternoon and…

A: Given data, Temperature of sopas = 100oC Constant temperature maintained = 7oC Lowered temperature =…

Q: 2. At 1:00 pm, a thermometer reading 90°F is taken outside where the air temperature is 15°F. At…

A: Given data, Room temperature T0 = 90oF Outside temperature Ts = 15oF

Q: At 10 A.M. a woman took a cup of hot instant coffee from her microwave oven and placed it on a…

Q: Suppose that a corpse was discovered in a hotel room at midnight and its temperature was 80°F. The…

A: .Newton’s law of cooling generally states that the rate at the object that changes temperature…

Q: A heat load calculation is being done to determine how much heat is beinglost through a wall. The…

A: To calculate the net area of the wall, We have to reduce the area of the window from it. Breadth of…

Q: In the solar energy budget shown; Space Outgoing Radiation (%) 100% 8 17 6 9 40 20 Incoming…

Q: If the thermometer is taken from a room in which the temperature is 75 ° C into the open, where the…

A: Newton’s law of cooling is generally referred that the rate at that the object changes its…

Q: A thermometer reading 45°C is brought outside where the temperature is 25°C. Five minutes later, the…

Q: The R- value for a 50 mm wood fiber insulation board (k= 0.044 W/m.K)=…

A: Note:- As per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts. Kindly…

Q: By how much could the flow rate of fuel gas of Example 11.2 be reduced if a recuperator were used to…

A: We know that: The density of air at 59° F=0.0765 lb/ft3 The density of air at 1160° F:

Q: An engineer carried an aneroid barometer from the ground floor to his office atop the Shangri La…

Q: A typical ceiling of a house consists of items shown in the accompanying table. Assume an inside…

A: Given data,

Q: cannot exceed 40 °C, what is the minimum speed that the ambient air should be blown? the…

A: If you have any doubt please ask .

Q: Q 02: A body at a temperature of 50F is placed outdoor where the temperature is 100F If after 5…

A: Using the Newtons law of cooling:Tt=Ts+To-Tse-ktTs=Surrounded temp=100°FTo=initial…

Q: 9- A bowling ball of mass 7.5 kg travelling at 10 m sec-rolls off a horizontal table 1 m high.…

A: Mass=7.5kg Vx=10m/s

Q: 2.5 liters of water at initial temperature of 16?C absorbed 800 calories of heat. Calculate the…

Q: 67. A cookie has been made in a room with an ambient temperature of 100°F. If it was cooked in an…

A: Given values: Ambient temperature in room, T0 = 100°F Oven temperature, Ts = 350°F After 1 minute,…

Q: Calculate the amount of radiation emitted for a unit surface (1 m2) for the following situations:…

A: The given data is shown below:

Q: A thermometer reading 75 degrees F is take out where the temperature is 20 degrees F. 4 minutes…

A: (a) Let u (°F) represent the temperature of the thermometer at time t (min), the time being measured…

Q: 3. According to Newton's 'Law of cooling', the rate at which the heat is lost by a heated body is…

Q: Example 1.6: If the monthly mean of average daily temperature and monthly mean of maximum daily…

A: Given data: Monthly mean of the average daily temperature, Ts = 38 oC Monthly mean of maximum daily…

Q: Light from a chromatic light source strikes a surface. Seventy percent of the light is reflected and…

A: (1) It is required to determine the percentage of light transmitted. % Transmit=100-% Reflected+%…

Q: A weather station measures an air pressure of 2,000 psi and a temperature altitude of 30,080 ft at a…

Q: During winter, when people are in a well-insulated house,they usually feel comfortable if the air…

A: Solution:-Thermal protection demonstrate utilization of appropriate protection materials and plan…

Q: Problem 15.1 R = 287.14 J/kg°K and k = Find the velocity of bullet fired in standard air if the Mach…

A: Given, Mach angle, alpha = 30° R=287.14 J/kg°K k= 1.4 t= 15°C T= 15+273= 288°K

Q: A room has a width of 14.1 feet, a length of 14.8 feet, and a ceiling height of 14 ft. The average…

A: Width B =14.1 ft length L =14.8 ft Height H =14ft Flow rate=3.7m3 /s

Q: 2.19 Determine the change in the kinematic viscosity of air that is heated from 10°C to 70°C. Assume…

Q: The water in a hot water heating system is heated to 76°C. What is thistemperature reading on a…

A: Given values: Temperature in Celsius = 76°

Q: he temperature of a body falls from 90°C to 70°C when placed in a surrounding of constant…

A: First condition, The initial temperature is Ti=90°C. The final temperature is Tf=70°C. The…

Q: Perform the following temperature conversions: (a) Convert 55°F to (1) Rankine, (2) Celsius, and (3)…

Q: A thermometer reading 18°F is brought into a room where the temperature is 70°F. One minute later…

A: (a)

Q: Q10/ A fire has been happened near a wall in a building, suppose the heat transfer equation in the…

Q: A metal bar at a temperature of 100 deg. Fis placed in a room at a constant temperature of 0 deg. F.…

Q: A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the…

Q: A thermometer reading 75°F is taken out where the temperature is 20°F. The reading is 30°F 4min…

Q: 9- A bowling ball of mass 7.5 kg travelling at 10 m sec rolls off a horizontal table 1 m high.…

A: given U = 10m/s height of table 1 m g= 10m/s2

Q: a. According to the National Coffee Association, the best serving temperature of coffee is between…

A: Note:- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…

Q: 6. An object is placed in a room where the temperature is 20°C. The temperature of the object drops…

Q: A house has a volume of 1200 m3 (a) What is the total massof air inside the house at 15°C? (b) If…

A: The given data is shown below: Volume=1200 m3Temperature=15°C

Concept explainers

Temperature Difference and Heat Transfer

Whenever there is a flow of heat flux resulting from a temperature gradient within the material or between two materials, there is heat transfer. Heat transfer primarily arises due to temperature differences between two bodies or within bodies. The term temperature gradient denotes temperature differences or variation of temperature due to change in some quantity. The fundamental use of the concept of temperature is found in the zeroth law of thermodynamics.

Question

100%

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Temperature difference and heat transfer

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

The brewing pot termperature of coffee is 180° F. and the room ternperature is 76° F.After 5 minutes, the temperature of the coffee is 168° F. How long will it take for the coffee to reach a serving temperature of 155° F.? O 49.97 minutes O 0.187 hours O 11.213 hours O 33.3 minutes
Alcohol thermometers can measure temperatures in the range of 100 F to 200 F Determine the temperature at which an alcohol thermometer with a Fahrenheit scale will read the same number as a thermometer with a Celsius scale.
At 10 A.M. a woman took a cup of hot instant coffee from her microwave oven and placed it on a nearby kitchen counter to cool. At this instant the temperature of the coffee was 180°F, and 10 minutes later it was 160°F. Assume the constant temperature of the kitchen was 70°F. What was the temperature of the coffee at 10:15 A.M.? The woman of this problem likes to drink coffee when its temperature is between 130°F and 140°F. Between what times should she have drunk the coffee of this problem?
a. According to the National Coffee Association, the best serving temperature of coffee is between to . One day you decided to take a coffee break at Falcon Garden and it was served with a temperature of 83 and after 5 minutes you found out that the temperature of the coffee was decreased to 71 degrees C. If the temperature at Falcon Garden is 20 degrees Celsius, what is the temperature of your coffee after 19 minutes? (Round answers to the nearest whole number, unit not needed) b. The population of a community is known to increase at a rate proportional to the number of people present at time . if the initial population is doubled in 20 years, how long (in years) will it take to triple the population? Round answers to 2 decimal places, no units needed.
3. A thermometer reading 10°C is brought into a room where the temperature is 18°C ; 1 minute later the thermometer reading is 14°C. how long does it take until the reading becomes 16°C.
A vendor takes an ice cream cup out of a freezer, kept at -18 degree-Celcius. Outside, the room temperature is 32 degree-Celcius. After 60seconds, the ice cream has warmed to -8 degrees Celcius. What is the temperature of the ice cream after 300 seconds?
During the midday 2pm, the temperature of the water that is left out on a table is 18° If the temperature of the surrounding is 34°C and the water’s temperature heated up to 26°C at 2:25pm. After how many minutes will the water’s temperature be 32°C?
The water in a hot water heating system is heated to 76°C. What is thistemperature reading on a Fahrenheit thermometer?
A thermometer is removed from a room where the air temperature is 70°F and is taken outside, where the temperature is 10°F. After ½ minute the thermometer reads 50°F. What is the reading of the thermometer at t = 1 min? How long will it take for the thermometer to reach 15°F
During winter, when people are in a well-insulated house,they usually feel comfortable if the air temperature is near22°C (72°F). If you have ever spent a night in a poorly insulatedcabin in winter, however, you will recognize that paradoxically,when people are in poorly insulated buildings, they often feelchilly even when the air inside is heated to 22°C or higher. Oneimportant reason for the difference in how warm people feel inthe two sorts of buildings is that even if a well-insulated andpoorly insulated building are identical in the air temperatureinside, they differ in thermal-radiation heat transfer. Specifically,a person standing in the two types of buildings experiencesdifferent heat exchange by thermal radiation in the two. Explainhow thermal-radiation heat transfer accounts for the sense ofchill in the poorly insulated building. (Hint: Think of the outerwalls of the two types of buildings, and think specifically of thetemperatures of the interior surfaces of those walls.)
A small metal bar, whose initial temperature was 20° C, is dropped into a large container of boiling water. How long will it take the bar to reach 90° C if it is known that its temperature increases 2° in 1 second? Select the correct response: 83.2 sec 88.2 sec 82.1 sec 75.2 sec none of the choices
When a cake is removed from an oven, its temperature is measured at 320°F. Three minutes later its temperature is 210°F. How long will it take for the cake to cool off to a room temperature of 80°F?