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Ehrenfest paradox (Ehernfest, 1909)
The special relativistic "paradox" including a quickly rotating disc. As any radial segment of the disc is perpendicular to the direction of motion, there must be no length contraction of the radius; though, since the circumference of the disc is parallel to the direction of motion, it has to contract.
Q) why we cant use the nuclear reactor concept in making fuel for our usages? Ans) Beacause nuclear reacters produse a huge energy which can''t be in our control and we can''t co
Anode rays were discovered by: (1)Goldstein (b)J. Stoney (3)Rutherford (4)J.J. Thomson Ans: (1)Goldstein
What are Magnetic Fields? Like electric and gravitational fields, a magnetic field is a construct which helps you determine the force on a pole due to a magnet generating the f
Changes Of resistance with temparature: The resistance of all materials changes with changes in temperature. The resistance of all pure metal increases with temperature. The
types of equilibriam
Which of the subsequent conditions must be met in order for a uniform magnetic field to exert a force on a particle? Ans: A charged particle has to be in a magnetic ground
CO has same electrons as or the ion that is isoelectronic with CO is: (1) N + 2 (b) CN - (3) O + 2 (4) O - 2
Inductors are the electronic components designed especially for introducing a required amount of inductance in the circuit. They are coils of wires, wound around some magnetic mate
Which statement concerning the electric potential of a solid object made out of a perfectly conducting medium is most correct? Answer: It is the electric field which is z
Is the sheath color important? This is a mainly slippery subject and the cause of heated debate. Several scientists affirm that an opaque light or white colored cladding, parti
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