A rod CD of thermal resistance joined at the middle of an identic shown in figure, The end A, B maintained at 200°C, 100°C respectively. The heat current in CD

Q: A long length of copper wire is initially at room temperature (23∘C) when it is connected across the…

A: Given: The initial temperature of copper wire is Ti=23∘C. The voltage of potential source is V0=10…

Q: A hot copper rod is immersed in 500 kg of water for which the temperature increased  to 180F from…

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Q: is available in the electric systems and mechanical systems.   no medium liquid  air gas

A: air or gas ,are available in the electrical and mechanical systems .

Q: In order to protect the wiring on an aircraft from overheating and catching fire if overloaded, two…

A: The two possible methods of protection for aircraft wiring are fuse circuit breaker.

Q: How much time would be required to warm 0.500 L of water from freezing to boiling using a 1200 W…

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Q: Conduction Homeworl The in sida.of house is 3o'c. The at your outside 5.e. You have e wall, which…

A: The heat transfer rate through a wall having a temperature gradient is given by Q˙ = kA∆TL, where k…

Q: Two eesistimceb of 30 n each are seis with heat aranged Jonls perdudd for One neinete a voltge romce…

A: Formula for Heat liberated,  H = I2 * R * T or H = T * V2 / R Data given : Time, T = 1 minute = 60…

Q: Under what conditions can the overall heat transfer coefficient of a heat exchanger be determined…

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Q: How much energy is required to heat 50 gallons of water from 20C to 130F? Note the unit change.…

A: The required expression for the energy is,

Q: Is the rate the conduction expected to be the same through all sections of a large glass window?

A: Rate of conduction is the amount of heat transferred and is equals to, Qt=kAT2-T1d Here, k is the…

Q: The thermal conductivity of a material depends only on the type of and is a constant. If a material…

A: The thermal conductivity of a material is a measure of its ability to conduct heat.

Q: Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal…

A: Usually insulators are made by mixing fibers, powders of flakes of insulating materials with air.

Q: Note that for copper ('1x10-5 C' head when its temperature rises from 12° C to 32 ° C. Calculate the…

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Q: Explain referigerators and heat pumps.

A: Refrigerator:The process of removing heat from bodies colder than their surroundings is called…

Q: 0.165 kg of water at 88.0o C is poured into an insulated cup containing 0.204 kg of ice initally at…

A: Solution:     Given Values, mass of water (m)=0.165 Kgchange of Temperature (δT)=880 C

Q: To measure specific heat capacity by an electrical method. what do you do before the experiment?

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Q: What types of refrigeration units are used to chill water for air-conditioning purposes?

A: This type of refrigeration system is used on the roof or back side of the building. Then the chilled…

Q: Why is it that only electrons near EF contribute to the electrical and thermal conductivity? Explain…

A: In metals, the Fermi energy gives us information about the velocities of the electrons which…

Q: An electric shower is capable of heating water from 10 C to 55 "C when the flow rate is 0.0400 kgs.…

A: Given that:T1=10°CT2=55°Cm˙=0.0400 kgs-1

Q: How much heat energy Q we need to heat mass m = 140 mg from room temperature T = 20 degrees Celcius…

A: Given: The mass m = 140 mg = 0.14 g Room temperature T = 20 oC Final temperature T' = 100 oC Note:…

Q: If the air from the previous problem on the airtight room loses 350 kJ of heat, What would be the…

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Q: 2000W heater is immersed in water at 100*C. deterine the time rate of vapourisation  of water.

A: given that, power, P = 2000 W let L is the latent heat of vaporization, L = 540 cal = 540×4.2 = 2268…

Q: Consider two cylindrical rods that are identical in size and shape, but are made of different…

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Q: If the refrigerator door is left open, what happens to the temperature of the kitchen?

A: Entropy in thermodynamics is defined as the degree of randomness or disorder in a system. The…

Q: The heat of 50MJ in joule is?

A: Heat.

Q: What is the maximum possible coeffcient of performance of a heat pump that brings energy from…

A: The relation between temperature in kelvin and the temperature in Celsius is: Convert the…

Q: The thermal conductivity of an insulator has a maximum at about 10% of the Debye temperature. Why…

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Q: A 50- cm - diamc ter pipeline in the Arctic carrics hot oil where the outar surfaco is maintained at…

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Q: Sslg ala The body loses.. Of its heat body through * radiation 40% O 65% O 30% O 2% O 85% O

A: Radiation is the process in which there is a transfer of heat from one object to other without any…

Q: The heat produeed by a l00 W heatu in 2 minutes is ?

A: Given:power P = 100 wtime t = 2 minutestime t = 2 x 60 = 120 sec

Q: An aluminium spere is 8.75 cm in diameter. What will be its % change in volume if it is heated from…

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Q: A pipe is insulated to reduce the heat loss from it. However, measurements indicate that the rate of…

A: Yes, the measurements can be right.

Q: A 10KW immersion heater is placed in a pot containing two liter of water at 23°C. How long will it…

A: Given that:- Power of heater, P = 10 kW = 10 × 103 W Volume, V = 2 L = 2 × 10-3 m3 Temperature, T1 =…

Q: Water enters a boiler at 500 psia as a saturated liquid and leaves at 600°F at the same pressure.…

A: The flow inside the pipe is shown as, Where, P = pressure of boiler T2 = exit temperature of water,

Q: An electric kettle was marked 500 Watt, 230 volt and was found to bring one kg of water at 15 degree…

A: