a-countrys-water-consumption-rate-is-modeled-by-wt-w0-e-qt-where-q-and-gt-0-w0-2

Question

A country's water consumption rate is modeled by w(t)=w0e−qt w(t) = $$w_0$$ $$e^{-qt}$$ , where  0 "\u003eq\u003e0 q \u003e 0 , w0=2×108 $$w_0 = 2$$ 	imes $$10^8  L/yr$$	ext{L/yr}, and the total water reserve is 8×1010 8 	imes $$10^{10}  L$$	ext{L}. Find the minimum decay constant q q  so that the water reserve lasts indefinitely.

Accepted Answer

0.0025 yr−10.0025	ext{  yr}^{-1}

Answer

0.025 yr−10.025	ext{  yr}^{-1}

Answer

0.0015 yr−10.0015	ext{  yr}^{-1}

Answer

0.01 yr−10.01	ext{  yr}^{-1}