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wen to and wen not to take self energy... eg: a sphere of mass 2m is broken into two spheres of mass m each and kept dist d apart... also does it mattter whether d original sphere was broken inti a sphere and a cube of mass m ...
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if 2 identical point charges , dist d apart, are kept. then how do they know to get away from each other??? i mean .... plz explain wid d help of field lines... ...
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consider a u tube filled with water (height h both arms). now let it displace by x units. find time period.... ...
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A poor farmer went to a market to sell some pea and lentil, however as he had only one sack and didn't want to mix peas and lentils, he poured in the sack the peas at first, bound the sack up and than poured in the lentils. A ...
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This is one of my most favorite logic puzzles. Imagine you are in a room with 3 switches. In adjacent room there are 3 bulbs (all are off at the moment), each switch belongs to some bulb. It is impossible to see from one room ...
