u0860867
urgent help needed pls help
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u0860867
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UnkleRhaukus
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is uninhibited decay the same as exponential decay ?
u0860867
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i am not sure @UnkleRhaukus
UnkleRhaukus
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\[\big[\text{NaCl}\big](t) = \big[\text{NaCl}\big]_0e^{-t/\tau}\]
UnkleRhaukus
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\[\frac{\big[\text{NaCl}\big](t)}{\big[\text{NaCl}\big]_0} = e^{-t/\tau}\\
\ln\tfrac{\big[\text{NaCl}\big](t)}{\big[\text{NaCl}\big]_0} = -t/\tau\\
\tau\ln\tfrac{\big[\text{NaCl}\big]_0}{\big[\text{NaCl}\big](t)} = t\\\tau = \frac t{\ln\tfrac{\big[\text{NaCl}\big]_0}{\big[\text{NaCl}\big](t)}}\]
UnkleRhaukus
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what do you think?
u0860867
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@UnkleRhaukus i don't get what u wrote
UnkleRhaukus
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any of it?
UnkleRhaukus
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do you know where i got the original equation from ?
Mertsj
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\[A=A _{0}e ^{-kt}\]
u0860867
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@UnkleRhaukus pls could u help with this question
Mertsj
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tangent negative, sin positive puts you in quadrant II
Mertsj
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|dw:1367156027644:dw|
u0860867
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@UnkleRhaukus for the above question pls can u draw the equation because the equation u wrote is in wierd computer language form its really urgent pls help thanks
UnkleRhaukus
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UnkleRhaukus
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i found \[\tau=\tfrac1k\sim1 \text{day} \]