A hot object is allowed to cool in air of constant temperature Tm. The object's temperature was initially at 170°C and cooled to 90°C in 10 minutes. Knowing that the material has a temperature decay constant of k=0.075/min, determine the temperature of the air.

Q: 1/ The roof of an electrically heated home is 6 m long, 8 m wide, and 0.25 m thick, and is made of a…

A: Given data: The area of the roof is A=6×8=48 m2 The thickness of the roof is t=0.25 m The thermal…

Q: what two fundamental parameters of superfluid tell you if the superfluid is type one or type two?

A: A superfluid is a rare type of material that has peculiar characteristics like zero viscosity. This…

Q: A food product wants to be produced in a small round shape (pellet) by freezing it in a water blast…

A: Given: A food product wants to be produced in a small round shape. The initial freezing temperature…

Q: 2. A spherical tank with internal diameter of 197-inches is made of 3-cm-thick stainless steel (k =…

A: Given: d=197 inchesri=2.5 mt= 3 cm = 0.03 mr0=2.5+0.03=2.53 mk=…

Q: EES |of 1 mm is used for measuring the temperature of a hydrogen gas stream. The properties of the…

A: According to our guidelines, we cannot provide solution using any software. But we can provide you…

Q: 4) A spherical container is filled with iced water at 0°C. The tank is made of iron (k=15 W/m.°C)…

A: Here we will calculate equivalent resistance and use it to get heat transfer

Q: The temperatures on the left and right surfaces of a 15-cm thick wall are 375C and 85C . The wall is…

A: Given:Wall thickness, L=15 cmLeft side wall temperature, T1=375oCRight side wall temperature,…

Q: When the system is completely isolated from its surroundings so that there is no heat transfer, this…

A: Open thermodynamic system is a system in which both energy and mass can cross the boundary of the…

Q: 1. The Heat Index HI, calculated from the air temperature and relative humidity, is the apparent…

A: Given data We have to calculate the Heat Index (HI) from the air temperature and relative…

Q: A refrigeration storage is supplied with 10,000 kg of fish at a temperature of 20°C. The fish has to…

A: Given: Mass of the fish is 10000 kg. Initial temperature of the fish is 20C. Final temperature of…

Q: The author and his then 6-year-old son have conducted the following experiment to determine the…

A:

Q: A machine element as seen in the figure is made of pure copper. It has an inner diameter of D;=2.9…

A: Given that, Inner diamter of element, Di=2.9 cm,Outer diameter of element, Do=5.9 cm,Height of…

Q: Temperature Distribution 0/0 cosh m(Lx) + (h/mk) sinh m(L - x) cosh mL + (h/mk) sinh mL

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Q: ., In a certain experiment, cylindrical samples of diameter 4 cm and length 7 cm are used (see Fig.…

A:

Q: You may have noticed that bridge decks are often built with expansion joints that permit the deck to…

A: To full fill the quality parameters , we can  not provide hand written solution…

Q: Consider an electrically heated brick house (k=0.40 Btu/h-ft-°F) whose walls are 9 ft high and 1 ft…

A:

Q: Two walls of a stol composed of insulating materia (k=0.25 KJ/hr-m-°C) with 15 cm thick and concrete…

A: Given   For insulating material Thermal conductivity, k1 = 0.25 kJ/hr.m.K…

Q: The temperatures of each node are shown in the figure and all values are given. Find the heat loss…

A: The goal is to determine the heat loss from the top surface of the plate to the environment. we can…

Q: determine the ratio of the heat lost from the side surfaces of the pan to that by the evaporation of…

A:

Q: What is the effect of wind shear on thermals?

A: The detailed explanation is provided below.

Q: 3. A hot pie is just taken out from an oven with a set temperature of 175°F. It is placed near a…

A: Given data: - The initial temperature of the pie is Ti = 175 oF. The ambient temperature of the pie…

Q: Determine the steady-state temperature distribution Tr, t) In hemisphere of radius r b, in the…

A:

Q: A square thermal window is constructed of two sheets of flat glass, each 4.00 mm thick, separated by…

A: Given:kglass=0.80 W/m.Kkair=0.024 W/m.KTcold=20oCThot=30oCCross-sectional area, A=6.00 m2Find:a The…

Q: Stimulus Sends signal to hypothlamus Thermoreceptors Blood vessels constrict and sweat glands are…

A: Reference Input: Normal body temperature (36-37°C) Controller : hypothalamus Actuator :  glands,…

Q: J 6 A semi-infinite solid, with a boundary condition of convection on the surface (Tfluid = 100°, h…

A: Given:The temperature of the fluid, The convective heat transfer coefficient, At time , the uniform…

Q: It is designed in such a way that the internal temperature of a commercial heat treatment furnace…

A:

Q: Five glass vials will be transported 4 hours stacked on top of each other in a hollow cylinder case.…

A: Given Data: Ti=-80oCTf=-20oCWG=12.9 gH=38.7 mmd=22 mmtp=20 mmts=5 mmTatm=22oC   To Find: Thickness…

Q: Steel is sequentially heated and cooled to relieve stresses and to make it less brittle. Consider a…

A: SteelExplanation:Step 1:Step 2:Step 3: Step 4:

Q: The thermal conductivity of a fluid is 0.09 BTU/ft-h-F having a kinematic viscosity of 0.0215 ft…

A: Given that: k = thermal conductivity of the fluid = 0.09 BTU/ft-h-F ν = kinematic viscosity of the…

Q: it is desired to understand the time - temperature behavior of a hot copper sphere. the sphere has a…

A: it is desired to understand the time - temperature behavior of a hot copper sphere. the sphere has a…

Q: The nuclear fuel in cylindrical shape of length L at radius R is covered with aluminum shell at…

A: Given Data: Nuclear Fuel cell  Length = LRadius = RFHeat energy per unit volume Sn=Snoa+brRF1/2…

Q: idaly übäi : Thermal diffusivity of a substance is proportional of conductivity inversely…

A: NOTE - As per our company guidelines we are supposed to answer only the first 3 multiple choice…

Q: 1. Judging  from its unit W/m.K can we define thermal conductivity of a  material as the rate of…

A: 1. We can not define thermal conductivity as the rate of heat transfer through the material per unit…

Q: Saved Help Save & A 2-kW resistance heater wire with thermal conductivity of k= 70 W/m-K, a diameter…

A:

Q: Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls…

A:

Q: Q5) Consider a wall-mounted power transistor that dissipates 0.18 Wof power in an environment at…

A: The convective heat transfer is defined as the enhancement of conduction by virtue of convection.…

Q: 19 mm diameter steel balls are quenched by heating to 989 K followed by slow cooling to 400 K in an…

A:

Q: A 2x2-m glass window, 1 cm thick is subjected to 10°C and 3°C inner and outer temperatures…

A: As per given question A 2x2-m glass window, 1 cm thick is subjected to 10°C and 3°C inner and outer…

Q: As shown in the figure, a hot fluid flowing in 1 m long tube. The temperature of the inner surface…

A: Given that ,l=1 m Qrad=Qconv×5%T∞=25Ch=100W/m2Kk=1W/mKTi=200CTsurr=25Cri=25…

Q: The two surfaces of a 1.0-cm-thick plane wall are at 10°C and 45°C, and the heat transfer rate is…

A: Thickness of the surfaceTemperatures:Heat transfer rate

Q: The thermal conductivity of a fluid is 0.09 BTU/ft-h-F having a kinematic viscosity of 0.0215 ft2/h.…

A:

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.