Question: It is estimated that the Oklo reactor occurred when the ratio of 235 U to 238 U was 3.67%. Given the present ratio of 0.72%

It is estimated that the Oklo reactor occurred when the ratio of ²³⁵U to ²³⁸U was 3.67%. Given the present ratio of 0.72% and the half-lives of both isotopes, estimate the time when the Oklo reactor was active.

Step by Step Solution

★★★★★

3.38 Rating (154 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Let U 58 t be the abundance of 235 U and 238 U as funct... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related The Physics Energy Questions!

It is estimated that the net amount of carbon dioxide fixed by photosynthesis on the landmass of Earth is 5.5 1016 g/yr of CO2. Assume that all this carbon is converted into glucose. (a) Calculate...

It is estimated that the lifetime for HFCs in the stratosphere is 2-7 years. If HFCs have such long lifetimes, why are they being used to replace CFCs?

It is estimated that the day Mt. St. Helens erupted (May 18, 1980), about 4.0 105 tons of SO2 were released into the atmosphere. If all the SO2 were eventually converted to sulfuric acid, how many...

1. Calculate the cost of each capital component, after-tax cost of debt, cost of preferred, and cost of equity with the DCF method and CAPM method. 2. What do you estimate the company?s WACC? Please...

Complete the following problems from Chapter 12 in Financial Management: Theory and Practice : Chapter 12: Topics: Additional Funds Needed, Forecasted Statements and Ratios, Financing Deficits...

I need, I am working on GENERAL ELECTRIC AND UNITED TECHNOLOGIES CORP, I need help GE and UTC Financial Statements Forecast for the next 5 year using the attachment. Throughout this course you will...

Hi There, I need someone to help me with the attached finance worksheet. There are 3 problems in this excel file - one problem on each individual tab. I am attaching a couple of additional files as...

Density SiriBFperc Over45 AbdomenC HipC ThighC WristC 1.0708 12.3 0 154.25 21.9 32 27.4 17.1 1.0853 6.1 0 173.25 23.4 30.5 28.9 18.2 1.0414 25.3 0 154 66.25 28.8 25.2 16.6 1.0751 10.4 0 184.75 22.8...

Write a report for MYOB Group Limited, it should including: Budgets and Performance Measures 1. Look for your company's mission statement or statement that sets out the overall philosophy and...

School State Boston College MA Brandeis University MA Brown University RI California Institute of Technolo CA Carnegie Mellon University PA Case Western Reserve UniversitOH College of William and...

During 2017, Kew Company, a service organization, had $200,000 in cash sales and $3,000,000 in credit sales. The accounts receivable balances were $400,000 and $485,000 at December 31, 2016 and 2017,...

1. Consider an automatic teller machine (ATM) system. Attempt to apply the 11 categories of business goals to that system and infer what goals might have been held by various stakeholders involved in...

Mutual funds composed of municipal bonds with high credit ratings allow investon in high tax brackets to avoid taves while maintaining a low degree of liquidity risk. exchange rate risk. credit risk...

How does consumer sovereignty determine production decisions in a market economy?

Randomly polarised radiation at a wavelength of 3 cm is incident on a plane water surface at an angle of 83 o to the normal. Calculate the Stokes vector, and hence polarisation state, of the...

Sea water has an electrical conductivity of typically about 4 S m-1. The real part of its dielectric constant at radio frequencies of 100 MHz and below is 88.2. By assuming that the imaginary part...

A commonly used approximation to the absorption length is

Lakonishok Equipment has an investment opportunity in Europe. The project costs 10.5 million and is expected to produce cash flows of 1.7 million in Year 1, 2.4 million in Year 2, and 3.3 million in...

*Course Hero X Lesson 3.4 Certify Mode Question X G class width - Google Search X + X - > C A learn.hawkeslearning.com/Portal/Lesson/lesson_certify#! + Save & Exit Certify Lesson: 3.4 Frequency...

Understanding the optimal capital structure Review this situation: Universal Exports Inc. is trying to identify its optimal capital structure. Universal Exports Inc, has gathered the following...