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Math/physics question please help!!

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  • 05-05-2016 5:56pm
    #1
    Melanie1992
    Registered Users Posts: 17 ✭


    Hi guys im studying for a morphology exam and physics/maths was never my strong points in fact in terrible, im wondering would anyone help me with this question an explain it to me , I would be so grateful. Here goes ;

    I go swimming at the local pool, and complete a kilometre in an hour.
    The pool is kept at room temperature, and the water has a density of
    p = 714 kg/m3
    and a dynamic viscosity of µ = 8.9 *10-4 kg/(m*s).
    The equation for the Reynolds number is: Re = P*V*L / viscosity (u)


    Where v is velocity and L is characteristic length.
    My wife then swims the same speed in a swimming pool (at room
    temperature) filled with olive oil. Given that olive oil has a density of
    875 kg/m3 and a dynamic viscosity of 0.1 kg/(m*s), and assuming she
    is 80% of my linear dimensions, what is her Reynolds number as a
    percentage of my Reynolds number?


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