(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This is an equation relating radioactivity of lead in marine core sediments in comparison with the depth of the sediment.

The equation is A_{L}=A_{0}exponential - λL/s

Where A_{L}= activity at depth L (Bqkg^{-1})

Where A_{0}= activity at depth 0 cm (Bqkg^{-1})

λ = decay constant 0.031 yr^{-1}

L= sediment depth (cm)

s= sediment accumulation rate (cmyr_{-1})

I need to make this into y=mx+C form

2. Relevant equations

As above.

3. The attempt at a solution

Well Ln both sides gives me

Ln A_{L}= Ln (A_{0}exponential - λL/s)

Ln A_{L}= (Ln A_{0}) + (Ln*exponential - λL/s) (which cancels)

Ln A_{L}= (Ln A_{0}) - λL/s

Ln A_{L}= y

Ln (A_{0}) = c

L= x

1/s = m

Is that correct? The graph has to be Ln A_{L}against L but I wasn't sure about m and c. Thanks :)

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# Homework Help: Radioactive Decay Graph in y=mx+c form

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