Determine the half-life of the substance that decays from A, to A in time t. A, = 11.8, A = 3.1, t = 15 hours The half-life of the substance that decays from 11.8 to 3.1 in 15 hours is approximately hours. (Do not round until the final answer. Then round to one decimal place as needed.)

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.