A person brings a mass of two kg from A to B . The increase in kinetic energy of the mass is 4J and the work done by the person on the mass is -10J , then Va-Vb = _________ .Where Va and Vb are gravitational potentials at A and B
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As a good rational approximation for the square root of two, with a reasonably small denominator, the fraction 99/70 (≈ 1.4142857) is sometimes used.
The sequence A002193 in the OEIS consists of the digits in the decimal expansion of the square root of 2, here truncated to 65 decimal places:
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