Strontium-90 is a radioactive material that decays according to the function A(t) = Ao e -0.0244t, where Ao is the initial amount present and A is the amount present at time t (in years). Assume that a scientist has a sample of 800 grams of strontium-90. (a) What is the decay rate of strontium-90? (b) How much strontium-90 is left after 40 years? (c) When will only 200 grams of strontium-90 be left? (d) What is the half-life of strontium-90? CHI (a) The decay rate of strontium-90 is%. (Type an integer or a decimal. Include the negative sign for the decay rate.) (b) Approximately grams of strontium-90 is left after 40 years. (Do not round until the final answer. Then round to the nearest whole number as needed)

Strontium-90 is a radioactive material that decays according to the function A(t) = Ao e -0.0244t, where Ao is the initial amount present and A is the amount present at time t (in years). Assume that a scientist has a sample of 800 grams of strontium-90. (a) What is the decay rate of strontium-90? (b) How much strontium-90 is left after 40 years? (c) When will only 200 grams of strontium-90 be left? (d) What is the half-life of strontium-90? CHI (a) The decay rate of strontium-90 is%. (Type an integer or a decimal. Include the negative sign for the decay rate.) (b) Approximately grams of strontium-90 is left after 40 years. (Do not round until the final answer. Then round to the nearest whole number as needed)

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter6: Vector Spaces

Section6.7: Applications

Problem 16EQ

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