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Determine the change in entropy when 2 kg of a gas at 277 K is heated in a closed, rigid container to a temperature of 368 K. Take the specific heat at constant volume to be 1.42 KJ/Kg.K.
Precaution to minimize Radiation Danger: 1. One should keep safe distance away from radiation emitting source. 2. The radiation from the reactor are shielded by thick concr
Shockley, Brattain and Bardeen won a Nobel Prize for what small invention? Ans: Shockley, Bardeen and Brattain won a Nobel Prize for small invention of transistor.
When rays are incident on a boundary among medium, a section of incident waves goes back into the initial medium whereas the remaining is sectionaly absorbed and sectionaly transmi
Question: A proton a absolutely charged elementary particle is released from rest at a point in space where the electric potential is 15 volts. Following to its release the par
Making a sun-dial To withstand all weather, a sun-dial should be form of metal or painted wood. A cardboard model can be formed for easy experiments. The gnomon which casts
How can light be defined in simplest form? The common explanation of 'light' (visible) is electromagnetic radiation visible to the human eye. It is only a little part of wha
What are the applications of laser transitions? Applications of laser transitions: a. High coherence of light is helpful for measuring length precisely by interferometry or
Give one advantage of a scanning electron microscope over a transmission electron microscope? The SEM has become more popular than the TEM as it can make images of high resolut
A 150-kg roller-coaster car climbs to the top of a 91-m-high hill. How much work is completed against gravity as the car is lifted to the top of the hill?
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
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