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: 66% (9 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...
-
Do you think the global convergence of broad-based variable pay programs will continue? Explain your thinking.
-
Tandrin Aviation Holdings Ltd. agreed to sell a jet aircraft to Aero Toy Store, LLC, for \($31.75\) million. ATS paid a \($3\) million deposit to a third party with the balance due upon delivery....
-
In the audit of the Regional Transport Company, a large branch that maintains its own bank account, cash is periodically transferred to the central account in Cedar Rapids. On the branch account's...
-
A country produces good X using labor (L) and capital (K), and good Y using L and land (T). Unfortunately they suffer an earthquake in a major city and some of their capital stock is destroyed. a)...
-
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...
-
Complete the following tasks: a. Design a class named Player that holds a player number and name for a sports team participant. Include methods to set the values for each data field and output the...
-
Why conduct training and what are exercises? Explain the rationale for conducting EM-specific training and exercises. Identify the benefits and risks associated with conducting training and...
-
given the aggregate supply and aggregate demand curves in the photo need to know the level at which increases in real GDP can take place without inflation. AGGREGATE SUPPLY AGGREGATE DEMAND HOMEWORK...
-
An exhaust stream exits a plant at 1 atm and 160C at a rate of 1 m3/hr. Unfortunately, it includes 60,000 ppm of heptane, which was used as a solvent. Not only will this heptane contribute to ozone...
-
evaluate the expression p 2 + 6 p - 8 when p = - 3
-
A vibration sensor is depicted in Figure 1. It contains a seismic mass m= 1 gram supported by a spring with stiffness k = 10 N/mm and a damper with damping constant c = 140 Ns/m. The sensor measures...
-
Express the length 50 500 m (micrometers) in centimeters, decimeters, and meters, to three significant figures.
-
The Taylor's series expansion for cosx about x = 0 is given by: where x is in radians. Write a user-defined function that determines cosx using Taylor's series expansion. For function name and...
-
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
-
A block of mass 2 8 kg , sliding with a speed of 1 2 m / s on a smooth level surface, makes ahead - on collision with a block of unknown mass, initially at rest. The two stick together. Afterthe...
-
writing an essay on the fundamentals of mechanical engineering is a great opportunity to explore the history, concepts, and importance of this field. Below is an outline for your essay, including the...
-
Tank level control pressure The water level control system, seen in Figure 5, is designed to control the level of water in the tank (T). The aim of the system is to control the rate with which the...
Study smarter with the SolutionInn App