40% of incident radiant energy on the surface of thermally transparent body is reflected back, if the transmissivity of the body be 0.15 then emissivity of the surface is–

Q: Consider a three-square-foot black body plane surface at a temperature of 76°F, calculate the heat…

A: Introduction Radiation Thermal radiation, or electromagnetic radiation that results from a body's…

Q: Find the total radiation intensity for a day when the diffuse radiation is equal to 20% of the…

A: The solar constant is 1.353 kW/m2. Generally, about 70% of the radiation incident on the atmosphere…

Q: The basal metabolic rate isthe rate at which energy is produced in the body when a person is at…

A: Given: Area (A)= 2.0 m2 T=30°C=303 KTs=18°C=291 Kemiisivity (ε)=1 To determine: The net amount of…

Q: Absorptivity, reflectivity and transmissivity are three main properties in radiation heat transfer.…

A: Explaining the absorptive and reflectivity and transmissivity and relation between them.

Q: You are using a heated cylindrical tube blackbody as a chamber for an experiment.  The tube is 2m…

A:

Q: Calculate the equilibrium temperature of the plate, based on the incoming solar radiation and the…

A: DefinitionThermal radiation:This topic investigates how electromagnetic waves transmit heat across…

Q: A cross section of a furnace is that of any equilateral triangle. All the surfaces are grey and…

A: Given, T1=1000KT2=400Kε1=0.8ε2=0.4

Q: A solar collector consists of a long duct through which air is blown; its cross section forms an…

A: Geometry:Length of duct (L) = 1 mSide length of equilateral triangle cross-section (a) = 1 mSurface…

Q: ofluid and give som

A: Radiation: It is characterized as the exchange of energy by electromagnetic waves wherein there is…

Q: A small sphere (emissivity =0.503 radius=r1) is located at the center of a spherical abestos shell (…

A: Here, Emissivity, ε=0.503 Radius=r1 Thickness, t=1.74 cm Outer radius=r2 Temperature of the smaller…

Q: You went to Target to buy some masks. As you walk up to the store, you notice the huge red balls in…

A: Given:Ts=17°CT∞=22.5°Cd=1 mQ=6.6 W

Q: Why do we need to define reciprocal space? Compare and contrast real space and reciprocal space?

A: The reciprocal lattice is the Fourier transform of another lattice. The initial lattice is also…

Q: Molten metal at 2000 C is poured using crucible. The liquid metal jet has a diameter of 3 mm with an…

A: To find: which step is wrong in the given steps

Q: All thermos containers have a thin region of vacuum between the outer casing and the inner…

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.