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    Two phase decay equation solution

    Hello, Does anyone know how to solve an equation of the form: e-ax+e-bx=c Where a,b and c are constants? This left side of the equation represents the sum of two exponential decay processes, one fast and one slow. I want to know for what positive value of x the expression on the left...
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    Acoustic versus mechanical impedance

    Can someone explain to me the following: I have been told that acoustic impedance is analagous to mechanical impedance. For mechanical impedance (Z), Z = force / velocity and for acoustic impedance (Z), Z = pressure / flow However, in the mechanical case, force refers only to...