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Homework Help: Algebra - how do i solve for this

  1. May 24, 2009 #1
    [tex]\eta = 1 - \frac{Q_c}{Q_h}[/tex]

    I have everything except Qh,

    i stuck the equation into my graphics calculator and get 13039

    n = 0.27
    Qc = 9519 J

    how'd i solve for Qh using that equation?
    cheers
     
  2. jcsd
  3. May 24, 2009 #2
    [tex]\eta = 1 - \frac{Q_c}{Q_h}[/tex]

    [tex]\eta Q_h = Q_h - Q_c[/tex]

    [tex]Q_h(1-\eta)=Q_c[/tex]

    [tex]Q_h=\frac{Q_c}{1-\eta}[/tex]
     
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