# Heat transfer: conversion

9,344 results

Heat transfer: conversion
is it possible to convert British thermal unit/ pound*Rankine to pound force*ft/pound mass Fahrenheit? if so, what is the conversion to and from?

heat transfer
a. Steam at 230oC flows through a steel pipe ( = 15/. ) whose inner and outer diameters are 9 cm and 10 cm, respectively in an environment at 15oC. The pipe is insulated with 5 cm thick fiberglass ( = 0.035/. ). The given heat transfer coefficients on the inside and ...

Physical Science
QUESTION GIVEN---Thermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with. MY ANSWER---Because, the ice may be trying to transfer cold, but if the ...

heat transfer
True or false (i) Steel is better conductor of heat than bricks. (ii) Radiations are ultrasonic waves. (iii) Black body is having emissivity 2. (iv) Natural convection do not need any external source for fluid flow. (v) Fins cause increase in rate of heat transfer

physical science
hermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with.

Physics - Heat Transfer
I am trying to calculate heat transfer between two objects. The units are as follows: m1: 100 g t1: 10 degrees C spec heat 1: 1.00 cal/g degree C m2: 200 g t2: 90 degrees C spec heat 2: 0.2 cal/gm degree C I set Q1 = Q2 m1 x spec heat 1 x delta T1 = m2 x spec heat 2 x delta T2...

chemistry
Which of the following best describes the heat engine? A. A heat engine works through the conversion of energy in the form of heat to mechanical work. B. A heat engine works through the conversion of energy in the form of heat to chemical work. C. A heat engine works through ...

Energy Transfer and Heat flow
1. What is entropy? 2.With every energy transfer, what form of energy is always released? I think 2 is Heat? not sure about 1

Physics - Unit Conversion
I am trying to calculate heat transfer between two objects. The units are as follows: mass: grams specific heat: cal/gm degree celsius temperature: degree celcius My numbers aren't working out and I know how to do the problem. So, what's the deal with the gm. Is that gram mass...

Energy Transfer and Heat flow
1. What is entropy? 2.With every energy transfer, what form of energy is always released? I think 2 is Heat?

physics-heat transfer
energy conscious homeowners often insulate their homes. one form of insulation is thick pads of loosely packed glass fibres.explain how these pads reduce heat transfer. how do thick curtains help reduce heat loss from the windows of a house? builders often insulate parts of ...

Thermodynamics
Can I have any energy transfer as heat transfer that is 100% available? Explain with equation

heat transfer
can i ask u some question? about the heat transfer..1st question ,On a hot summer day, a student turns his fan on when he leaves his room in the morning. When he returns in the evening, will the room be warmer or cooler than the neighboring rooms? Why? Assume all the doors and...

Science
A man relaxes in his hot tub after a long day at work. hid ody temperature is 98.6 F. The temperature of the water in the hot tub is 102 F. How does heat transfer A) Heat does not transfer between his body and the water. B) Heat transfers to his body from the water by ...

Thermodynamics
A lawnmower tractor engine produces 18hp using 40kW of heat transfer from burning fuel. Find the thermal efficiency and the rate of heat transfer rejected to the ambient. I converted the power to 13.24kW then found the efficiency by dividing 13.24kW by 40kW but the answer is ...

heat transfer
a plane wall of thickness 10 cm and thermal conductivity of 25w/m degree centigrade has a volumetric heat generation of.3*10 to the power 16w/mque .the wall is insulated on one side & other side is exposed to fluid at90 degree temperature . determine maximum temperature in ...

surface energy budget
I'm give the following data: Q*, QG, QH, QE for a 24-hour period, i'm required to plot these 4 data on the same graph, which I've already done. I'm also required to compute these 24 hours totals - transfer of sensible heat to the atmomsphere - transfer of latent heat to the ...

Physics
How is it possible for a fabric (textile) to conduct the 3 modes of heat transfer (conduction, convection and radiation?) i've been searching for a possible experiment to investigate this but no luck Anything with a higher temperature than its surroundings can move that energy...

Science
which of the following illustrates conduction as a mode of heat transfer 1 point a microwave oven produces electromagnetic waves that transfer to the food in the form of head leaving a metal spoon in a bowl of hot soup will make the spoon at a well pasta rises and falls with ...

science
which of the following illustrates conduction as a mode of heat transfer 1 point a microwave oven produces electromagnetic waves that transfer to the food in the form of head ** leaving a metal spoon in a bowl of hot soup will make the spoon at a well pasta rises and falls ...

Science
What does an Electromagnetic wave transfer into?? It can transfer to heat, electical power, mechanical power, or light.

Science
of the following illustrates conduction as a mode of heat transfer 1 point a microwave oven produces electromagnetic waves that transfer to the food in the form of head leaving a metal spoon in a bowl of hot soup will make the spoon at a well •• pasta rises and falls with ...

HEAT TRANSFER
The door of a domestic refrigerates has an area of 1.7 m2 & it basically consists of a thin metal sheet with a 25 mm thick layer of insulation on the inside. The thermal conductivity of this insulation is 0.25 W / m-deg & heat transfer on each side of the door is 10 W / m2-deg...

thermodynamics
3.4 A heat engine operates between two heat reservoirs with temperatures of 560 and 280 K a) The heat engine itself has a temperature of 560 K during heat addition from the 560 K reservoir and a temperature of 280 K during heat rejection to the 280 K reservoir. The thermal ...

science
The total energy of motion in the molecules is called POTENTIAL ENERGY. TEMPERATURE is the average amount of energy of motion in the molecules of a substance. A THERMOMETER is a thin glass tube with a bulb on one end that contains a liquid,usually mercury or colored alcohol. ...

chemistry
How many grams of methane must be combusted to heat 1.05 of water from 24.0 to 89.0, assuming as a product and 100% efficiency in heat transfer?

Chemistry
How many grams of methane must be combusted to heat 1.05 of water from 24.0 to 89.0, assuming as a product and 100% efficiency in heat transfer?

Science
What is the main source of energy for the water cycle? What type of heat transfer does this provide? The sun is the main source driving it: Sun heats water, water evaporates. What type of heat transfer does it provide? I think that it is radiation, but I'm not completely sure.

Heat Transfer
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.

science
3. One calorie is the energy required to raise one gram of water one degree Celsius. Since we use the joule as the standard measurement of energy, 1 calorie = 4.184 J. If a pot is placed on the stove with 2.4 liters of water at a temperature of 27°C, how many joules are ...

Chemistry HEAT OF FUSION
What is the final temperature, in oC, after a 15.0 g piece of ice, at 0oC, is placed in a styrofoam cup with 128 g of water initially at 74.0oC. Assume there is no transfer of heat to or from the surroundings. The specific heat of water = 4.184 JK-1g-1 The heat of fusion of ...

1. Which of the following best shows the transfer of heat by radiation? my answer: c 2. Which of the following best shows the transfer of heat by convection? my answer: b 3. Water has specific heat of 4200 J per kilogram per degree celsius. This means that 2 kg of water will ...

(SOL PS.7)(VBO 8.4.12)
DESIGN AN EXPERIMENT RELATE TO HEAT TRANSFER DESIGN AN INBESTIGATION FROM A TESTABLE QUESTION RELATED TO HEAT TRANSFER, OR SOUND (SOL PS.8)(VBO8.5.10 DESIGN AN EXPERIMENT FROM A TESTAN=BLE QUESTION RELATED TO SOUND

Chemistry
What is the final temperature, in oC, after a 27.0 g piece of ice, at 0oC, is placed in a styrofoam cup with 120 g of water initially at 70.5oC. Assume there is no transfer of heat to or from the surroundings. The specific heat of water = 4.184 JK-1g-1 The heat of fusion of ...

linguistics
Describe what contrastive analysis is and what transfer is(both positive transfer and negative transfer)?

linguistics
Describe what contrastive analysis is and what transfer is(both positive transfer and negative transfer)?

1. what is 67 K equivalent to in Celsius? answer: -206.15 C 2. what is 458.9 Celsius in K? answer: 732.05 3. heat is closely related to: a)temperature b)thermal energy c)force d)convection currents answer: b 4. What does a low efficiency score reveal about a home in terms of ...

1. what is 67 K equivalent to in Celsius? answer: -206.15 C 2. what is 458.9 Celsius in K? answer: 732.05 3. heat is closely related to: a)temperature b)thermal energy c)force d)convection currents answer: b 4. What does a low efficiency score reveal about a home in terms of ...

Physics
Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J ...

Heat Transfer
The inside wall of a furnace needs to be designed such that it transmits a maximum heat flux of 600 W/m2 . The inside wall temperature will be 1100°C and the outside temperature will be 150°C. We have two different types of bricks from which we can make the wall: Type 1: 24 ...

science
The total energy of motion in the molecules of a substance is called? ?is the average amount of energy of motion in the molecules of a substance. A ? Is a thin glass tube with a bulb on one end that contains a liquid usually mercury or a colored alcohol. The energy transferred...

chemistry
How much ice is required to cool a 15.0oz drink from 71 F to 34 F, if the heat capacity of the drink is 4.18 J/g*C ? (Assume that the heat transfer is 100% efficient.)

chemistry
Islands in the middle of the oceans (for example, Great Britain, Hawaii, Bermuda) tend to have more stable climates with smaller temperature fluctuations than regions of the same mass surrounded by land (for example, continents). Use your knowledge of heat energy, specific ...

Chemistry
The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol • K. The conversion of 50.0 g of ice at 0.00°C to liquid water at 22.0°C requires how much kJ of heat? Can someone explain how to do this, I tried but keep getting the wrong answer.

world history
8. What strategy did Buddhist and Christian missionaries employ to spread their faith that Muslims didn't? A. Conversion of kings and other elite figures B. Use of artifacts C. Forceful conversion of others [D. Conversion of merchants]

Material Science
A polystyrene ice chest contains 3 kg of ice at 0 degrees Celsius. Triangle H for melting = 3.34 x 10 to the 5 power J/kg p = 1000 kg/m cubed, CP =4190 J/ (kg K). Heat transfer is limited by conduction (k=0.06W/m K)) from the outside wall at 30 degrees Celsius. This means that...

Heat Transfer
A 1 m square verticalplate is heated to 300 deg C and placed in room air at 25 Deg C. calculate the heat loss from the one side of the plate

Physics / Heat Transfer
How much heat must be removed from a 200 g block of copper to lower its temperature from 302 oF to 68 oF? Specific heat of copper: c = 0.092 kcal/(kg K) a. 2.4 kcal b. 2400 kcal c. 18.4 kcal d. 12 kcal e. 26 kcal

Chemistry II
Liquid sodium can be used as a heat transfer fluid. It's vapor pressure is 40.0 torr @ 633 degrees C and 400.0 torr @ 823 degreees C. Calculate it's heat vaporization.

world history
What strategy did Buddhist and Christian missionaries employ to spread their faith that Muslims didn't? A. Forceful conversion of others B. Conversion of merchants C. Use of artifacts D. Conversion of kings and other elite figures im 70% sure it's D what do you think

world history
What strategy did Buddhist and Christian missionaries employ to spread their faith that Muslims didn't? A. Forceful conversion of others B. Conversion of merchants C. Use of artifacts D. Conversion of kings and other elite figures im 70% sure it's D what do you think

Heat Transfer
1.The physical significance of ....... is that it tells us how fast heat is propogated or it diffuses through a material during changes of temperature with time. 2. According to Krichoff's law in thermal equilibrium absorptivity is equal to ........ 3.In conduction heat ...

CHEMISTRY
I know this question is already on here but the answer wasn't helpful to me. Liquid Sodium can be used as a heat transfer fluid. Its vapor pressure is 40.0 torr at 633 C and 400.0 torr at 823 C. Calculate its heat of vaporization.

Heat Transfer
Fill In the Blanks: 1.The physical significance of ....... is that it tells us how fast heat is propogated or it diffuses through a material during changes of temperature with time. 2. According to Krichoff's law in thermal equilibrium absorptivity is equal to ........ 3.In ...

Heat Transfer
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24 W/m¨¬C?

Heat Transfer
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24 W/m¨¬C?

physics
A transfer of heat occurs with a pot of 8.0 kg of water that changes from 400 degrees kelvin to 320 degrees kelvin. How much heat is absorbed or given off?

Chemistry
When ice melts, it absorbs 0.33 per gram. How much ice is required to cool a 11.0 drink from 75 to 37, if the heat capacity of the drink is 4.18 ? (Assume that the heat transfer is 100 efficient.)

Chemistry
When ice melts, it absorbs 0.33 per gram.How much ice is required to cool a 12.0 drink from 72 to 37, if the heat capacity of the drink is 4.18 ? (Assume that the heat transfer is 100 efficient.)

Chemistry
From data below, calculate the total heat (in J) associated with the conversion of 0.265 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.)

physics
the mass of the water is 131 kg and its initial temperature is 24.2°C, how much energy must the water transfer to its surroundings in order to freeze completely? The specific heat of water is 4186 J/kg·K, and the latent heat of fusion is 333 kJ/kg

Material Science
A polystyrene ice chest contains 3 kg of ice at 0 degrees Celsius. Triangle H for melting = 3.34 x 10 to the 5 power J/kg p = 1000 kg/m cubed, CP =4190 J/ (kg K). Heat transfer is limited by conduction (k=0.06W/m K)) from the outside wall at 30 degrees Celsius. This means that...

Chemistry I
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 24.0 fluid ounce drink from 75°F to 35°F, if the heat capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.)

heat transfer
what are Biot & Fourier members?

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in reaching equilibrium? (b) What is the change(J/K) in entropy due to this heat transfer? (c) How much work (J) is made unavailable, taking the lowest ...

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in reaching equilibrium? (b) What is the change(J/K) in entropy due to this heat transfer? (c) How much work (J) is made unavailable, taking the lowest ...

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in reaching equilibrium? (b) What is the change(J/K) in entropy due to this heat transfer? (c) How much work (J) is made unavailable, taking the lowest ...

physics
(a) How much heat flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in reaching equilibrium? (b) What is the change in entropy due to this heat transfer? (c) How much work is made unavailable, taking the lowest temperature to be 18...

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 18°C water in reaching equilibrium? (b) What is the change(J/K) in entropy due to this heat transfer? (c) How much work (J) is made unavailable, taking the lowest ...

Physics
9. In which system is heat usually transferred from the cooler part to the warmer part? a. A stove as it heats up water. b. A refrigerator that is running. c. An electric fan that is running. d. None of the above, because it is impossible to transfer heat in this manner.

physical science
How do heat and work transfer energy?

thermodynamic
what is the difference between thermodynamics and heat transfer

Heat Transfer
Define Thermal diffusivity law?

heat transfer
thermal conductivity of solids depends on ??

science
explain to to transfer heat from a electric stove?

Math
(1) which of the following correctly identifies the methods of heat transfer? 1. A- convention B- radiaton C- conduction ~~~~~~~~~~~~~ 2. A- conduction B- radiaton C- convention ~~~~~~~~~~~~~ 3. A- convention B- conduction C- radiaton ~~~~~~~~~~~~~ 4. A- radiaton B- convention...

general science
When heat energy travelsby convection enrgy is transferred by the circulation of heated material is this tru? Yes. Convection heat transfer takes place as the result of circulation of a fluid between hot and cold regions.

Chemistry
When ice melts, it absorbs 0.33 kJ/g. How much ice is required to cool a 11.0oz drink from 76F to 39F, if the heat capacity of the drink is 4.18J/gC ? (Assume that the heat transfer is 100% efficient.) I got 11 g, but I guess that's wrong...

chem
What would happen to the specific heat if some of the warm metal shot were lost during the transfer to the calorimeter? Answer a. It would not affect the calculated value of specific heat b. It would cause the calculated value of specific heat to be artificially high c. It ...

Physics
A 0.300 kg iron horseshoe that is initially at 550°C is dropped into a bucket containing 19.4 kg of water at 21.1°C. What is the final equilibrium temperature (in °C)? Neglect any heat transfer to or from the surroundings. Do not enter units. I'm taking (specific heat of ...

Science
Which of the following correctcly identifies the methods of heat transfer?

HEAT TRANSFER
Compute the heat flux thoroughly a 10 cm thick brick wall (k= 0.69 W/m-deg) Which has temperature of 105° C & 10° C maintained on its two faces. How this heat flux would vary when 3cm thick layers of magnesia insulation is added on the inside & outside faces of the wall? ...

chemistry
The figure shows a cube of air at pressure 1.0 atm above a hot surface on Earth. Contact with the hot surface causes the volume of the air to expand from 2.00 × 105 L to 2.20 × 105 L by the transfer of 8.2 × 106 J of heat. Assume the systems are isolated from the outside ...

Physics
A person's body is covered with 1.4 m2 of wool clothing. The thickness of the wool is 1.3 10-3 m. The temperature at the outside surface of the wool is 14°C, and the skin temperature is 36°C. How much heat per second does the person lose due to conduction? You have a nice ...

More Chem
Consider the combustion of propane. Delta H is -2221 kJ. Assume all heat is from combustion of propane. What mass of propane must be burned in order to furnish this amount of energy assuming the heat transfer process is 60% efficient.

chemistry
capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.)

heat transfer
Explain the concept of critical thickness of insulation with expression

heat transfer
Derive 3D general conduction equation for homogeneous material

Science
What kind of heat transfer cause Earth's major wind patterns?

chemistry
What will be the final temperature of the water in an insulated container as the result of passing 5.00 g of steam [H2O(g)] at 100.0°C into 195.0 g of water at 20.0°C? (?H°vap = 40.6 kJ/mol H2O) The best way to do these problems is to make the heat gained + heat lost = 0. ...

math
Q. Naomi has a formula that allows her to convert Clesius temperatures to Farenheit temperatures. She needs a formula for converting Fahrenheit temperatures to Celsius tempertures. What advice can you give her? I am thinking that I just reverse the preocess of the first ...

science
what kind of heat transfer causes earth's major wind patterns

physics
into which part of the fridge-freezer will the rate of heat transfer be greater?

Science, Heat Transfer
list 3 forms of radiation from the sun. how are they alike. how do they differ?

Physical Science
The transfer of heat that takes place because of the density difference in fluids is

when an ice cube would still transfer heat to another object it is in contact with.

chemistry
Which type of heat transfer is not blocked even by an insulated thermos? radiation ???

Science
For your discussion assessment, you will present your proposal of a device that minimizes heat transfer.

science
For your discussion assessment, you will present your proposal of a device that minimizes heat transfer.

chemistry
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75°F to 35°F, if the heat capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.) please explain realy realy well thanks:)

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