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Stefan-Boltzmann law (Stefan, L. Boltzmann):
The radiated power P (it is rate of emission of electromagnetic energy) of hot body is proportional to the radiating surface area, A, & the fourth power of the thermodynamic temperature, T. The constant of proportionality refer to the Stefan-Boltzmann constant. Mathematically specking,
P = e sigma A T4,
Where the efficiency rating e refer to the emissivity of the object.
VISUAL PHOTOMETRY: The branch of science which deals with measurement of brightness or luminous intensities of light emitted by different sources using certain standards and tech
It is the demagnetising force which is necessary to neutralize completely the magnetism in the magnetism material after the external magnetic field is reduced to zero.
A circuit having of a 10μF capacitor connected in series with a 25 k resistor with a switchable 100V d.c. supply. When the supply is connected, calculate (a) The time constant,
Polygon of force This topic just builds on the previous Triangle of Forces. Consider three forces A, B and C. A and B can be added by drawing a triangle to give a re
Please help I am stuck on this physics problem. Please cany anyone explain to me how to do it step by step please? If the speed of a car is increased by 135%, by what factor will
The residual enthalpy of saturated CO2, as calculated from the SRK equation of sate, is given below The ideal gas heat capacity of carbon dioxide is = 33 J/mol/K and ca
Electric Current: Electric current may be described as the rate of flow of charge. I=q/T Where, I = electric current q = charge T = time The unit of current i
A box is divided into two parts of equal volume via a partition. The box is thermally insulated from the surroundings. Consider that compartment 1 contains an ideal gas A at P 0 ,
What are fitting? Practically the only part of a fiber optic system which the public ever notices. End fittings are the components for fixing, supporting, finishing and aiming
Length contraction
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