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For a blackbody, the frequency at which maximum energy is emitted is 3 x 1013 Hz: A. Give a wavenumber for the wavelength of the infrared emission? B. What is the temperature of the blackbody? C. What is the total radiance emittance for the blackbody? D. Consider an emitter (with an emissivity of 0.5) at the same temperature of the blackbody (obtained from B). What is the total power lost by this emitter if its area is 2 m2 ?
Centripetal Force Requirement Uniform circular motion could be elaborates as the motion of an object within a circle at a constant speed. As an object moves within a circle and
Short Sightened OR Myopia: When a person can't able to see objects clearly but can see near objects clearly. This defect of vision is known as short sightedness.
Minimum amount of light for low vision If 90 photons enter the eye ,10 or less are actually absorbed in photoreceptors. About 3% are reflected at the surface of the corne
a) Three equivalent charges 2.0 micro coulomb each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Determine the Coulomb force experienced at its cent
Explain about the Homojunction Laser in brief. Homojunction Laser: Assume that GaAs be doped with T providing n-type material and with Ge providing p-type material. In forwa
What is time? 1. This is the question that each true scientist dreads to be asked especially in a public setting by extremely inquisitive young learners. We have learned to ca
A 250 N crate is sitting on a 30 degree inclined plane. The frictional force is larger than the component of the crate's weight parallel to the inclined plane, so that the crate do
Potential difference: When charges move from one point to another, it is not the actual values of potential at those points which are Important, but the potential different (pd
It states that angular momentum of a system remains conserved if no net torque is acting on the system.
Three inductive loads, each of resistance 4Ω and reactance 9Ω are linked in delta. When linked to a 3-phase supply the loads consume 1.2kW. Calculate (a) The power factor of
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