Suppose the quantity (in grams) of a radioactive substance present at time t is Q(t) = 2000 (50.31), where t is measured in months.a. How much will be present in 4 months?b. How long will it take to reduce the substance to 16 grams?a. There will be grams of the substance present in 4 months.(Round to the nearest gram as needed.)b. It will take months to reduce the substance to 16 grams.(Round to the nearest month as needed.)

Suppose the quantity in grams of a radioactive substance present at time t is Qt=20005-0.3t where t…

Answered: Suppose the quantity (in grams) of a…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Sehr put $1,000 into a savings account that earns 4%/a in interest, calculated simply. How much will she have after 3 months?
The half-life of a radioactive substance is 13 days. After 2 days a sample of the substance has been reduced to a mass of 3 mg. What was the initial mass (in mg) of the sample? Round your answer to 2 decimal places as needed. 3.34 Using your answer from above, after how many days will there only be 0.2 mg of substance left? 052.8 Round your answer to 2 decimal places as needed.
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12. For 500 g of a radioactive substance with a half-life of 5.2 hours the amount remaining is given by the formula M(t) = 500(0.5) 5.2, where M is the mass remaining and t is the time in hours. Calculate the amount remaining after 1 day. Estimate the IROC in mass at 1 day. a. b.
Suppose the total income in dollars from a machine is given by the following. I= 10e0.5t, 0sts 6, tin hours Find the average income (in dollars) over this 6-hour period. (Round your answer to the nearest cent.) $
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