A radioactive substance decays according to the formula A = Ao ekt where A is the initial amount of substance (in grams) A is the amount of substance (in grams) after t years k is a constant. The half-life of the substance is 10 years. If we begin with 20 g of the substance, how much will be left after 5 years? 1. grams 2. 20 grams 3. 20/2 grams 4. 5 grams 5. 20 ev2 grams

Q: A radioactive substance obeys the exponential decay equation y Yoe kt This is the value of k if the…

A: Given decay equation     y= yoe-kt Half life, t =12 years

Q: Pre Calculus (not Calculus) A radioactive isotope has a half-life of 450 years. Find how long it…

A: A radioactive isotope has a half-life of 450 years. Find how long it will take a sample of the…

Q: Find the value of the given exponential for the indicated values of the variable. 10t/2 (a) 10/2=…

A: 10t/2   , for t=-2 10-2/2 = 10-1=1/10= 0.110t/2   , for t=-2   10-2/2 = 10-1=1/10= 0.1

Q: Half-Life Decay Rate, k 3.7% per year = -0.037

A:

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A: Law of Decay is given as follows Where A is the amount any time t  is the initial amount k is the…

Q: A certain drug breaks down in the human body at a rate of 12% per hour. The initial amount of the…

A:

Q: It is known that A40 = 0.3 and A60 =0.5. The force of mortality is constant between ages 40 and 60,…

A: A40=0.3A60=0.5μx=μ=0.007i = 0.04 Force of mortality is constant between 40 and 60 Computing a¯*40:20

Q: Molybdenum-99 is a radioactive element used in medicine (for example when performing a brain scan).…

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Q: Complete the table for the radioactive isotope. Half-life Initial (years) Quantity Amount After…

A:

Q: Half-life The half-life of a particular element or isotope is the length of time necessary for half…

A:

Q: A radioactive substance has decay constant ?=.234 If you start with 200 grams, how much do you have…

A: Decay equation

Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.