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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.
Why bulky group present at axial position of chair or boat conformer is less stable compared to equitorial position? Ans) Let the bulky group has a large mass M. suppose it is
Q. What is Fresnel diffraction? a) The source as well as the screen are at finite distances from the obstacle producing diffraction. b) The wave front suffer diffraction is
Show that the spectrum of thermal radiation for T ¼ 300K peaks at approximately 10 microns.
What are the merits of typical ultrasonic flaw detector? Merits of typical ultrasonic flaw detector: a. Particularly one side of the specimen is needed for the study. b.
A baton twirler throws a spinning baton directly upward. As it goes up and returns to the twirler's hand, the baton turns through four revolutions. Ignoring air resistance and assu
how to create a graph on the acceleration due to gravity on a pendulum
how to find resultant?
Older people wear eye glasses with bifocal corrective lenses . What is the eye defect that necessitate this eye glasses ?
Determination of packing fraction of diamond The co-ordination number of an atom in diamond structure is 4 as can be seen from the unit cell of diamond and is loosely packed.
Noether theorem (Noether): A theorem which revels that symmetries are what gives increase to conserved quantities. For example, translational symmetry (the fact that the laws
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