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Q. If an object isn't moving, no external force acts on it.
No it is always not true, there would be balanced forces which cancel each other out leaving no net force. Example: Sitting on a chair, the chair pushes up on you while gravity pulls you down, but you aren't going anywhere because those forces cancel each oyher and net force is equal to zero.
Planck radiation law A law that defined blackbody radiation better than its predecessor, therefore resolving the ultraviolet catastrophe. It is depend on the supposition that e
I have tried to do an experiment where i tried to check the direction of the net force by water on a body. I have some question regarding some concepts. I took an empty sealed bott
project
Show that the spectrum of thermal radiation for T ¼ 300K peaks at approximately 10 microns.
As shown in the figure below, a bubble of gas with a volume of 1.20 cm3 is released under water. As it rises to the surface, the temperature of the bubble enhances from 27°C to
To develop the correct mathematical explanation of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature. Planck found it essent
Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise wit
In a plot of photoelectric current versus anode potential, how does 1. The saturation current varies with anode potential for incident radiations of dissimilar frequencies but s
Why do magnetic field lines contract longitudinally and exert a lateral pressure?
Charging a capacitor: In the diagram below, all of the resistance in the circuit is added together and shown as a single value R. With S 1 closed and S 2 open, the ca
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