How do the wheels of a train have sufficient grip on a metal track? I mean both of the surfaces are smooth (and not flexible) and it is okay if there is no inclination, but how about on an inclined track?
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I was solving the sample problems for my school's IQ society and there are some I don't get. Since all I get is a final score, I wan...
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Are C1, C2 and C3 connected in parallel, or C2, C3 in parallel and C1 in series with C23? Btw it appeared as a question in the basic physics...
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500 are at my end, 500 are at my start, but at my heart there are only 5. The first letter and the first number make me complete: Some consi...
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