Use the exponential decay model, A = A 0 e kt , to solve Exercises 2831. Round
Question:
Use the exponential decay model, A = A0ekt, to solve Exercises 28–31. Round answers to one decimal place.
The half-life of thorium-229 is 7340 years. How long will it take for a sample of this substance to decay to 20% of its original amount?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 70% (10 reviews)
First find the decay equation 05ekt 05e 7340k In 05 In e In 05 7340k In 05 7340k k 73400000094 A e 0000094t Next use the decay equation answer question Ae0000094t 02 e00000941 In 02 0000094 In 02 In e In 020000094t 0000094t t In 05 A e 7340 t171217 It will take 171217 years For greater accuracy use k In 05 7340 ...View the full answer
Answered By
Fahmin Arakkal
Tutoring and Contributing expert question and answers to teachers and students.
Primarily oversees the Heat and Mass Transfer contents presented on websites and blogs.
Responsible for Creating, Editing, Updating all contents related Chemical Engineering in
latex language
4.40+
8+ Reviews
22+ Question Solved
Related Book For
Question Posted:
Students also viewed these Mathematics questions
-
The continuous compound rate of decay of carbon-14 per year is r = -0.000 123 8. How long will it take a certain amount of carbon-14 to decay to half the original amount? Use the radioactive decay...
-
A convenient source of gamma rays for radiation chemistry research is 60 Co, which undergoes the following decay process: a. What is the rate constant for the decay process? b. How long will it take...
-
A car is originally worth $34,450. It takes 13 years for this car to totally depreciate. a. Write the straight line depreciation equation for this situation. b. How long will it take for the car to...
-
If A = -2 6 1 -7 1 then det (A) = an and A-1 =
-
Find the future values of the following ordinary annuities: a. FV of $400 each six months for five years at a simple rate of 12 percent, compounded semiannually b. FV of $200 each three months for...
-
This exercise is a continuation of BE 911. During 2025 (the following year), purchases at cost and retail were $168,000 and $301,000, respectively. Net markups, net markdowns, and net sales for the...
-
Why might a plaintiff wish to serve a demand letter on the defendant before filing a lawsuit?
-
Each day, a FedEx competitor processes approximately 85,000 shipments. Suppose that they use the same Service Quality Index as FedEx and identified the following numbers of errors during a 5-day week...
-
Enterprise Company manufactures Product Stina using three different raw materials. The product details are as follows: Selling price per unit is R 2 5 0 0 . 0 0 Material A 3 kg R 3 5 per kg Material...
-
The logistic growth function describes the population, f(t), of an endangered species of elk t years after they were introduced to a nonthreatening habitat. a. How many elk were initially introduced...
-
Use the compound interest formulas and A = Pert to solve Exercises 5356. Round answers to the nearest cent. Find the accumulated value of an investment of $5000 for 10 years at an interest rate of...
-
A chairs variable cost is $50 and its market value as a piece of unfinished furniture is $63 at a transfer point from the Assembly division to the Finishing division. The Finishing divisions variable...
-
The following is a December 31, 2024, post-closing trial balance for Almway Corporation. Account Title Cash Debits $ 83,000 Credits Investment in equity securities 148,000 Accounts receivable 79,000...
-
Debt Ratio for 2013: Total Liabilities = $50 (Accounts Payable) + $0 (Bonds Payable) = $50 Total Assets = $146 Debt Ratio = Total Liabilities / Total Assets = $50 / $146 = 0.342 or 34.2% e) Debt...
-
The following financial statements and additional information are reported. IKIBAN INC. Comparative Balance Sheets June 30, 2018 and 2017 2018 2017 Assets Cash $ 87,500 $ 44,000 Accounts receivable,...
-
2. Solve the initial value problem y" 5y' + 6y = ex x, y(0) = 0, y'(0) = 0.
-
Suppose the revenue (in dollars) from the sale of x units of a product is given by R(x) 33x + 45x 2x+2 Find the marginal revenue when 26 units are sold. Interpret your result.
-
The shareholders equity section of Golden Corporations comparative balance sheet at the end of 2010 and 2009 was presented as follows at a recent shareholders' meeting: The following items were also...
-
Which of the following streaming TV devices does not involve use of a remote controller? A) Google Chromecast B) Apple TV C) Amazon Fire TV D) Roku
-
Use the rational zero test to determine any rational zeros of f(x). f(x) = x + x - 11x 11 -
-
What is the maximum number of times that a horizontal line can intersect the graph of each type of polynomial? (a) Linear (degree 1) (b) Quadratic (c) Cubic
-
Divide the expression. 3x + 2x = x + 4x - 3 x+x=1
-
Question 2 [38 marks] (a) (i) Which of the following four vibrations shown in Figure 2.1 will be Infrared active, and which will be Raman active? Provide brief explanations for your selection. [8...
-
Maher Corporation, which has only one product, has provided the following data concerning its most recent month of operations: Selling price Units in beginning inventory Units produced Units sold...
-
Quality Brick Company produces bricks in two processing departments-Molding and Firing. Information relating to the company's operations in March follows: a. Raw materials used in production: Molding...
Study smarter with the SolutionInn App