Tell me what is astrophysics?
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In Einstein's mass energy relation E=mc2 why velocity of light is used and never ordinary velocities?what is the exact explanation?
Why are the girders on the railway bridges fixed at one end only?
Explain the Gravitation and gravity ?
What is the value of magnetism at the center of earth?
Is exothermic reaction useful in Lasing process? give reasion of ur answere?
why we use Transistor?
what is the relative speed between 2 serial electrons running in same direction along the wire?
Which lens is used for correcting long ?sightedness ?
What is larger the force the earth exerts on you or the force you exert on the earth?
what is ngative current
why the air temperature drops more on clear nights than on cloudy nights?
Explain the Mortar ?