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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.
find the number of electric lines of force that radiate outwards from one coulomb charge in vaccum
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.
TIME OF FLIGHT: "It is the total time for which the projectile remains in air". As, the body goes up and comes back to similar level, so it does not cover vertical distance,
Simple 'spring' balance Punch four holes in an old tin lid with a nail, spacing them partially round the circumference. Pass pieces of string by these holes and tie them togeth
Watt; W (after J. Watt, 1736-1819): The derived SI unit of power, explained as a power of 1 J acting onto a period of 1 s; thus it has units of J/s.
Here are the positions at three different times for a bee in flight (a bee''s top speed is about 7 m/s). time: 5.4 s 5.8 s 6.2 s position: m m Using the best information
Magnification is the ratio of size of image to the size of object. hence it is a dimensionless constant. It has no units. 1/m is not its unit.(1/m is the unit of power=DIOPTRE)
does lights of different wavelengths help us to see different colour
Landauer's principle: A principle that states it doesn't take energy to compute data explicitly, but rather it takes energy to erase any data, as erasure is a significant step
An e.m.f. of 25V is induced in a coil of 300 turns when the flux linking with it alters by 12mWb. Find the time, in milliseconds, in which the flux makes the change. An ignitio
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