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October 26, 2014

Search: Heat transfer: conversion

Number of results: 7,351

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?
March 7, 2010 by ttn

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
August 1, 2012 by siddique

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...
December 6, 2012 by Brenda

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 ...
December 13, 2012 by Anonymous

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
March 24, 2013 by Anonymous

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?
March 22, 2013 by Stephanie

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...
December 4, 2012 by Brenda

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 ...
May 4, 2007 by Emma

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 ...
June 12, 2013 by Kyle

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 ...
July 24, 2013 by sushil

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 ...
October 2, 2006 by Fai

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...
April 1, 2007 by Pet

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 ...
February 24, 2014 by Denna

Science
What does an Electromagnetic wave transfer into?? It can transfer to heat, electical power, mechanical power, or light.
November 26, 2006 by Jordyn

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...
August 1, 2012 by SIDDIQUE

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 ...
June 15, 2007 by jody

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. ...
October 8, 2014 by emma

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?
October 27, 2011 by Collin

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?
October 27, 2011 by Collin

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.
January 16, 2007 by Emilie

Heat Transfer
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.
February 26, 2012 by Farant

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 ...
October 6, 2011 by tanner

Physics -- check answers please
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 ...
March 4, 2014 by Lisa

(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
March 12, 2009 by tony

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 ...
October 2, 2014 by Mike

linguistics
Describe what contrastive analysis is and what transfer is(both positive transfer and negative transfer)?
March 26, 2011 by Monique

linguistics
Describe what contrastive analysis is and what transfer is(both positive transfer and negative transfer)?
March 26, 2011 by Monique

Physics -- check answers please
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 ...
March 2, 2014 by Lisa

Physics -- check answers please
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 ...
March 3, 2014 by Lisa

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...
October 8, 2014 by emma

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.)
January 22, 2013 by Jack

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 ...
May 15, 2013 by jader

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...
August 24, 2013 by Joy

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 0.00C to liquid water at 22.0C requires how much kJ of heat? Can someone explain how to do this, I tried but keep getting the wrong answer.
September 20, 2010 by Anonymous

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
March 27, 2014 by RHS

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]
October 6, 2012 by jake

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
January 30, 2013 by John

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.
September 5, 2011 by Keith

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
November 18, 2011 by firedup

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
November 18, 2011 by firedup

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 ...
August 1, 2012 by Devi

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.
December 9, 2011 by THOMAS

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 ...
August 1, 2012 by Dhilsath

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/m2C and T =40C. What heat generation rate in the tube will produce a maximum tube temperature of 250C for k =24 W/mC?
March 4, 2014 by Ritesh

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/m2C and T =40C. What heat generation rate in the tube will produce a maximum tube temperature of 250C for k =24 W/mC?
March 11, 2014 by RHS

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?
October 19, 2008 by sammi

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.)
February 5, 2010 by Al

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.)
February 1, 2011 by Kate

physics
the mass of the water is 131 kg and its initial temperature is 24.2C, how much energy must the water transfer to its surroundings in order to freeze completely? The specific heat of water is 4186 J/kgK, and the latent heat of fusion is 333 kJ/kg
August 5, 2014 by kb

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...
August 24, 2013 by Joy

Chemistry
From data below, calculate the total heat (in J) associated with the conversion of 0.265 mol ethanol gas (C2H6O) at 451C and 1 atm to liquid ethanol at 25.0C and 1 atm. (Pay attention to the sign of the heat.)
January 29, 2014 by Sarah

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 75F to 35F, if the heat capacity of the drink is 4.18 J/gC? (Assume that the heat transfer is 100% efficient.)
September 15, 2010 by Robbie

heat transfer
what are Biot & Fourier members?
July 24, 2013 by jigs

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0C when it is placed in contact with 1.00 kg of 18C 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 ...
July 25, 2013 by Justin

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0C when it is placed in contact with 1.00 kg of 18C 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 ...
July 26, 2013 by Justin

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0C when it is placed in contact with 1.00 kg of 18C 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 ...
July 28, 2013 by Justin

physics
(a) How much heat flows from 1.00 kg of water at 46.0C when it is placed in contact with 1.00 kg of 18C 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 18C?
July 28, 2013 by Justin

physics
(a) How much heat (J) flows from 1.00 kg of water at 46.0C when it is placed in contact with 1.00 kg of 18C 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 ...
July 28, 2013 by Justin

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.
November 19, 2012 by S

physical science
How do heat and work transfer energy?
April 29, 2008 by sam

thermodynamic
what is the difference between thermodynamics and heat transfer
June 20, 2011 by mm

Heat Transfer
Define Thermal diffusivity law?
August 1, 2012 by Dhilsath

heat transfer
thermal conductivity of solids depends on ??
July 24, 2013 by jigs

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.
July 4, 2007 by Shannon

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...
April 4, 2013 by Jordann

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 ...
October 24, 2010 by kellie

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? Also ...
August 1, 2012 by SIDDIQUE

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 14C, and the skin temperature is 36C. How much heat per second does the person lose due to conduction? You have a nice ...
April 18, 2007 by papito

chemistry
capacity of the drink is 4.18 J/gC? (Assume that the heat transfer is 100% efficient.)
September 15, 2010 by Rebekah

heat transfer
Explain the concept of critical thickness of insulation with expression
September 7, 2012 by paper kro

heat transfer
Derive 3D general conduction equation for homogeneous material
July 24, 2013 by jigs

science
what kind of heat transfer causes earth's major wind patterns
March 15, 2011 by molly

physics
into which part of the fridge-freezer will the rate of heat transfer be greater?
September 27, 2011 by steve

Science, Heat Transfer
list 3 forms of radiation from the sun. how are they alike. how do they differ?
January 14, 2013 by Jade

Physical Science
The transfer of heat that takes place because of the density difference in fluids is
March 18, 2013 by L

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 75F to 35F, if the heat capacity of the drink is 4.18 J/gC? (Assume that the heat transfer is 100% efficient.) please explain realy realy well thanks:)
September 15, 2010 by Rebekah

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 100.0C into 195.0 g of water at 20.0C? (?Hvap = 40.6 kJ/mol H2O) The best way to do these problems is to make the heat gained + heat lost = 0. q1...
October 12, 2006 by hal

Physics
Heat energy is the energy associated with changes in internal energy. If no phase changes occur, the transfer of heat energy is accompanied by a change in?
June 8, 2011 by Billy

Geography (Ms. Sue)
what role do wind and ocean currents play in climate? My answer: Wind and ocean currents help distribute the sun's heat from one part of the world to another through convention, the transfer of heat in the atmosphere by upward motion of the air.
September 2, 2013 by Anonymous

Chemistry
In lab we conducted a calorimetry experiment with a peanut. We burned a half a peanut and placed it underneath a pop can with 50mL of water inside. One of our questions is why heat transfer to the pop can isn't accounted for when calculating heat generated and why it's ...
April 19, 2010 by Anonymous

thermodynamics
0.5 kg of saturated vapor is contained in a closed system with pressure of 10 bar is cooled at constant volume until pressure decreases to 5 bar. Determine heat transfer and sketch the process in a P-v and T-v diagram answer = -473.35 kJ(heat is transferred from system to ...
April 16, 2012 by shasha

Science
Explain the difference between conduction and convection heat transfer,and give an example of each.
January 25, 2009 by Jillian

4th grade science
What kind of heat transfer cause Earth's najor wind pattern?
November 7, 2009 by Damian

physics
define black body, emissivity, solar constant in relation to heat transfer.
April 16, 2012 by frank fred

heat mass transfer
Eskimos make double walled houses of blocks of ice.
September 25, 2012 by chanchal

heat transfer
what is utility of extended surface? derive governing differential equation for fins
July 24, 2013 by jigs

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 ...
January 24, 2007 by catalina

Chemistry
In the equation Q = mc(deltaT), I learned that Q means heat transfer. Is it the heat transfer from the system to the surroundings, i.e. the system loses/absorbs heat or is it from the surroundings to the system? A couple of places on the Internet say that Q is the heat energy ...
March 4, 2013 by a Canadian

physics - Heat transfer
A round scar of area 'A' is formed on the chest of a man of temperature 37C. The rate of heat radiated from this scar is 1% more than that from the remaining part of the body. What will be the excess temperature at this scar over other parts of the body?
February 5, 2012 by uma

7th grade science
how do you change the question do you want to know about heat transfer into a regular sentence?
November 22, 2009 by jamzin

science
how do hydrogen bonds relate to the transfer off heat from the equator towards the poles of earth
January 27, 2011 by lulu

Heat Transfer
Explain thermal conductivity & give its variation in case of solid, liquids and gases?
August 1, 2012 by Dhilsath

science
if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?
January 17, 2013 by Taylor

sciene
if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?
January 17, 2013 by Taylor

science
if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?
January 17, 2013 by Taylor

4th grade science
There are three methods of heat transfer, radiation,covection, and conduction. I need to know an example of each.
October 2, 2007 by hunter

chemistry
heat of 100g of water when transfer -10C to 150C using this equation q=_(T_2)^(T_1)c_p dT
November 2, 2012 by Anonymous

Physics
what type of heat transfer does solar hot water heating use? (conduction, convection, radiation)
March 10, 2014 by Lisa

chem 101
using the unit conversion method derive an equation to calculate heat produced from the HCl-Na OH reaction
October 26, 2010 by andrew

chemistry
convert the know heat of fusion of water,334j/g to these units. the conversion between calories and joules is 1 cal = 4.184j
June 20, 2013 by y

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