Half a liter of liquid is being heated in a closed container to prepare food. Initial temp is 25C and desired temperature is 85C. How much energy is needed to raise the temperature of this amount of water as described? Specific heat of water is given as 4.18 kJ/(kg.K)

Q: Problem 3 An initially-insulated, rigid tank conta removed and the water in the tank e at 27°C. What…

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Q: here is a room with room vol: 300 M3 Maximum room temperature: 22 oC Cooling system: AHU

A: Given, There is a room with room volume : 300 m3 Maximum room temperature: 22°c Cooling system: AHU

Q: If gas is compressed from 5.75 L to 4.05 at 1.56 atm what is the magnitude in J? In addition if…

A: given data Pressure (P) = 1.56 atm = 155.0273 KPa volume (V1 ) = 5.75 L = 0.00575m3 volume (V2 ) =…

Q: Determine the following properties of the air and show them on a schematic drawing of the…

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Q: For a certain ideal gas, R = 0.282Btu/lb-R and k = 1.32. If 30Btu/lb are transferred to this gas,…

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Q: It takes 104 hours to install a heating system in an office building. Theinstallers have already…

A: given:total time =104hoursalready worked=36hour

Q: A piston-cylinder assembly initially contains 25 kg of liquid water at a temperature of 40 °C and a…

A: Given:Mass of water, m=25 kgInitial condition of water, P1=400 kPa, T1=40oCFinal condition of water,…

Q: 7- A free piston cylinder contains 100 grams of refrigerant R 134a with initial pressure of 400 kPa…

A: Dear student, we are suppose to solve only 3 sub parts. Please post other parts as separate…

Q: How much energy (in Joules) is required to fully melt 20g of ice taken from the freezer at - 5…

A: Given data as per question mass if ice =20×10−3 kginitial temperature =−50cwe know…

Q: As part of a processing of biofuels, water is pumped into a circular tank with a diameter Dt, as…

A: For the solution refer below images.

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.