I know that the RMS values need to be multiplied be 1.41 to get peak values, but now we are doing an experiment with magnetic field, there is a device that produces the magnetic field and the manual says we are supposed to multiply RMS values (which this device shows) by 2.82 to get the peak...
Kindly explain the significance of the geometrical moment of inertia.
i=\int y^2dA
y is the distance from the axis,
dA is the area element
spacetime
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Phase velocity of a wave can exceed the speed of light in vacuum. But it does not convey an information transfer at a speed greater than c. I am not sure about this concept. Is phase velocity just a theoretical concept in certain circumstances?
spacetime
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If you differentiate x^2 , you get 2x . But now, if you right x^2 as x+x+x+x+x+x..... x times, and then differentiate, you get 1+1+1+1+1+... = x
What's wrong. Is it the discontinuity arising from the fact that multiplication can be converted to addition only in integers.
Is there no process possible where the entropy of the universe decreases. If so, then what is the need of using the word spontaneous in the second law of thermodynamics? Why don't we just write any process?
spacetime
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Say, you have a parallel plate ideal capacitor and you choose a rectangular path, one side of which lies inside the region of electric field and the side parallel to that lies outside it.
The other two sides are obviously perpendicular to the field.
If I take this rectangular path then how...