Recent content by Darkkk

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    Estimation of central temperature of a star

    Ah yes I see! I have it now. Thank you for the advice :)
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    Estimation of central temperature of a star

    I do know R=8.314 joules per Kelvin but Pc is unknown, I am assuming the proportion relation will be used at the end of the problem to get the temperature in terms of the solar mass. I am just not quite sure what the first step is. Perhaps I ought to sub the Tc given in the question into the...
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    Estimation of central temperature of a star

    Problem: Relatively low mass stars can be shown to have their radii dependent on their mass as; R\proptoM1/2 From this, show that the temperature in kelvin at the centre of such a star can be estimated to be \approx24\times106(M/Msolar)1/2 Relevant Equations...
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    What is the mass and lifetime of the φ meson?

    OK so this is how far I got with this one... found the mean lifetime using \tau=(h/2\pi)/\Gamma This gave me a value of 1.5x10-22 Is that correct? also still stumped on how to find the mass...
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    What is the mass and lifetime of the φ meson?

    An electron and a positron are collided head on such that all their energy is used to produce a φmeson. The number of observed φ mesons is found to be inversely proportional to (E−E0)+Γ2/4. where E is the total centre of mass collision energy, E0=1019 MeV and Γ=4.26MeV What is the mass and...
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