Anonymous
Anonymous asked in Science & MathematicsPhysics · 2 months ago

What temperature gradient must exist along an aluminium rod in order to transmit 33.5x10^3 W/m^-2 (Data: k for aluminium is 210 W m^-1 K^-1)?

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  • 2 months ago

    Q/t = kA(delta-T)/L.

    In your problem, we want to find (delta-T)/L, so it's

    (Q/t)/(kA), and you are given

    (Q/t)/A = 33500 W/m^2 and k = 210 W/(mK).

    Therefore,

    (delta-T)/L = (33500/210) K/m = 159.5 K/m.

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