Recent content by Iscariot

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    Flat Universe Theory: Questions & Answers

    I realize this may be a really obvious question, but wikipedia and google haven't help settle my curiousity. If the universe is in fact a flat universe, as I believe has been proven with experimentation, this, if I am not mistaken, means the universe will continue to expand to a limit without...
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    Kinetic Theory Of Temperature Problem

    The rms speed of the molecules in a gas is 600ms^-1 and the mass of the molecules is 4.6*10^-26kg. What is the temperature of the gas in degrees Celcius? v_{r.m.s.}\=\600\ms^-1 \\ m\=\4.6x10^-26kg \\ n\=\6.022x10^23 \\ r\=8.31\j\k\mol^-1 \\ \\ \\ rt\=\frac{\2}{3}\(\frac{\1}{2}m<v^2>)\\...
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    Solve the Puzzle: Find the Scale Readings for a Mass Distribution

    Torque is essentially what you are dealing with, or the turning force. Force is calculated with F*d, or in your case, F*r because you're dealing with torque rather than force exactly. This is the formula you most likely need to use to solve this problem.
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    Calculating the Age of an Ancient Boat: A Radioactive Decay Problem

    The carbon in living matter contains a fixed proportion of the radioactive isotope carbon-14. The carbon-14 in 1.00g of carbon from living matter has an activity of 0.250Bq. The half-life of carbon-14 is 5730. When a plant dies the proportion of carbon-14 decreases due to radioactive decay. A...
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    Current Calculation Problem (Probably Simple)

    Never mind, I solved my own question. Sorry about this, it took me hours.
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    Current Calculation Problem (Probably Simple)

    A really basic circuit problem which I just don't understand. In the attached figure, C is a cell of e.m.f. 2V and internal resistance 1 Ohm. Calculate: a) the current through A b) the current through B c) the p.d. between the terminals of the cell I really don't understand how to calculate...
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