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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.
According to Hooke's law, within elastic limit, stress strain or stress = E Χ strain or Stress / Strain= E = a constant, Where E is called a
What are the units of fibre optic communication system? Fibre Optic Communication System: This comprises of the given three most important units: a. Transmitter: It has i
Which Path Requires the Most Energy This condition that can be simulated through use of a easy physics lab in that a force is applied to raise a cart up an incline at stable sp
GIve live examples for like and unlike parallel forces
Equatorial Line and Neutral point: Equatorial Line: The imaginary line joining the centre of mass and perpendicular to the line joining the poles of a bar magnet is called th
what is the importance of si unit
Ampere; A (after A.M. Ampere, 1775-1836) The basic SI unit of electric current, described as the current that, while going through two infinitely-long parallel conductors of ne
Superposition principle The general idea is that, while a number of influences are working on a system, the total influence on that system is just the sum of the individual in
ohmmeters: The use of ohmmeters is somewhat more involved. Most importantly when measuring resistance the circuit power must be switched off, power is derived from within the i
Micro Waves: Micro waves are radio waves with shorter wavelength among 1mm to 300cm. Microwaves are used in Radar and microwave ovens.
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