Consider the following data and then calculate the half-life for this particular isotope:
Time Activity (cpm)
0 days 320,000
40 days 216,100
100 days 120,000
(A) 35.2 days.
(B) 75.6 days.
(C) 70.6 days.
(D) 62.9 days.
(E) None of these.

Answers

Answer 1

Answer:

D. 62.9 days

Explanation:

Half Life Cpm activity:

320,000 / 2 = 160,000

At 100 days cpm is 120,000 then cpm 160,000 will be at 62.9 days.

[320,000 - 216,100] / 40 days = 2,597.5

160,000 / 2,597.5 = 62.9 days.


Related Questions

Critical Chain Project Management (CCPM) attempts to keep the most highly demanded resource busy on critical chain activities, but not overloaded.

a. True
b. False

Answers

Answer:

True

Explanation:

Critical-Chain

This was introduced or originated by Eli Goldratt in 1997. Its aim is to challenges conventional project management approaches and absolute dependence on TOC principles. The idea of what to change or eliminated is the largely rooted behaviors that is common with the traditional project management practices. It is very multitasking anf it is the longest string of reliance that occur on the project.

Critical- Chain Approach

This approach simply covers project network as it ca be limited by both resource and technical reliance/dependencies. each type of limitations can create task reliance.

The Summary of Critical Chain Approach

1.) use Aggressive but Possible Times (ABPT) for task durations

2.) identify the critical chain by accounting for resource dependencies

3.) use buffer management to track project progress etc.

The specific pace and quota of work and tight surveillance indicate that company 1 has a(n) _______ culture.

Answers

Question options:

-traditional

-contingency

-androgynous

-mechanistic

-organic

Answer:

mechanistic

Explanation:

The mechanistic culture in an organization is one that works by strict rules, structure and guidelines. It is different from the organic culture that is more open and flexible. Mechanistic organizations are characterized by hierarchy and bureaucracy, specifying labour divisions for it's employees in a formal, close-knitted and "mechanistic" approach. mechanistic organizations can be found among older organizations such as universities, hospitals, government organizations etc. Organic organizations can be found among newer organizations such as tech companies.

In a mechanistic culture-based organization, the specific pace, quota of work and tight surveillance are indicator that the company practice such culture.

The mechanistic culture is usually adopted by organization because its works by strict rules, structure and guidelines.

Mechanistic organizations can be found among older organizations such as universities, hospitals, government organizations etc.

In conclusion, the specific pace and quota of work and tight surveillance indicate that company 1 has a mechanistic culture,

Read more about mechanistic culture

brainly.com/question/8985614

If a company can implement cash management systems and save three days by reducing remittance time and one day by increasing disbursement time based on $2,000,000 in average daily remittances and $2,500,000 in average daily disbursements and its return on freed-up funds is 10%, what is the maximum that it should spend on the system

Answers

Answer: $850,000

Explanation:

The maximum amount that'll be spent on the system goes thus:

Additional collections will be:

= $2,000,000 × 3 days

= $6,000,000

Delayed disbursements will be,:

= $2,500,000 × 1 day

= $2,500,000

Then, the increment on funds will be:

= Additional collection + Delayed disbursement

= $6,000,000 + $2,500,000

= $8,500,000

Hence, maximum amount will be:

= 10% × $8,500,000

= $850,000

In a standard cost accounting system, the entry to record purchase of raw materials on account for $13500 when the standard cost is $12620 includes:______.
a. debit to Raw Materials Inventory for 12,750, debit to Materials Price Variance for $750 and credit to Accounts Payable for $13,500.
B. debit to Materials Price Variance for S7S0 and credit to Accounts Payable for $750.
c. debit to Raw Materials Inventory for $13,500 and credit to Accounts Payable of $13,500.
d. debit to Raw Materials Inventory for $12,750 and credit to Accounts Payable of $12,750.

Answers

Answer:

a. Debit to raw material inventory for $12,750, debit to material price variance $750 and credit to account payable for $13,500.

Explanation:

Date  Journal Entry                                   Debit      Credit

         Raw Material Inventory                   $12,750

         Material Price Variance                   $750

               Accounts Payable                                     $13,500

In eight years, when he is discharged from the Air Force, Steve wants to buy a $30,000 power boat. Click here to view Exhibit 12B-1 and Exhibit 12B-2, to determine the appropriate discount factor(s) using tables. Required: What lump-sum amount must Steve invest now to have the $30,000 at the end of eight years if he can invest money at:

Answers

Answer:

The correct answer is:

(1) $15,054

(2) $12,990

Explanation:

The required table is not given in the question. Please find below the attachment of the table.

Given:

Future value,

= $30,000

If discounting rate is 9%, the present value will be:

= [tex]Future \ value\times PV \ factor(9 \ percent, 8 \ years)[/tex]

= [tex]30000\times (\frac{1}{1.09} )^8[/tex]

= [tex]30000\times 0.5018[/tex]

= [tex]15,054[/tex] ($)

If discounting rate is 11%, the present value will be:

= [tex]Future \ value\times PV \ factor(11 \ percent, 8 \ years)[/tex]

= [tex]30000\times (\frac{1}{1.11} )^6[/tex]

= [tex]30000\times 0.433[/tex]

= [tex]12,990[/tex] ($)

Identify the simplifying assumptions usually made in net present value analysis.

a. AlI cash flows Other than the initial investment occur at the end of periods.
b. All cash flows generated by the investment project are immediately reinvested at a rate of return greater than the discount rate.
c. All cash flows generated by the investment project are immediately reinvested at a rate Of return equal to the discount rate,
d. All cash flows occur at the beginning of the periods,
e. The time value of money is ignored when evaluating investment proposals under the net present value analysis.

Answers

Answer:

a

c

Explanation:

net present value analysis is a capital budgeting method

It is used to analyse the profitability of an investment

what is the primary benefit people receive in exchange for paying premiums to an insurance company

Answers

Answer:

The insurance company will pay for covered expenses

With premium rates from insurance companies, the overall protection is much more guaranteed than a regular, and perhaps the insurance will cover more than regular insurance.

A benefit that people receive in exchange for paying premiums is that insurance company B.will pay for covered expenses.

What is insurance?

The insurance can be regarded as a process of insuring one's property or life in case of danger or any future problems.

The insurance company pays you or someone you choose if something bad happens to you. If you have no insurance and an accident happens, you may be responsible for all related costs.

Therefore, option B is correct because, when people pay their premiums, the company will be available to covered expenses.

Learn more about insurance here,

https://brainly.com/question/16267577

#SPJ2

A bond that pays interest semiannually has a price of $941.35 and a semiannual coupon payment of $26.00. If the par value is $1,000, what is the current yield

Answers

Answer:

5.52%

Explanation:

Calculation to determine the current yield

Current yield = ($26.00 × 2)/$941.35

Current yield=$52/$941.35

Current yield= .0552*100

Current yield= 5.52%

Therefore the Current yield is 5.52%

A natural monopoly arises whenA. a single firm aggressively forces other competitors to exit and industry.B. a single firm has a monopoly over natural resources.C. two firms merge into a single firm in order to capture more of the market.D. a single firm can produce more cheaply than multiple firms due to a downward-sloping average total cost curve.

Answers

Answer:

D

Explanation:

A monopoly is when there is only one firm operating in an industry. there are usually high barriers to entry of firms. the demand curve is downward sloping. it sets the price for its goods and services.

An example of a monopoly is a utility company

A natural monopoly occurs due to the high start-up costs or a large economies of scale.

Natural monopolies are usually the only company providing a service in a particular region  

Characteristics of natural monopolies

they have a large fixed cost The firms have a low marginal costThey occur naturally through the free market. It does not occur by government regulation or any other force

When Get the Glare Out needed some information about the potential market for its product, the marketing team looked to the Internet to find industry trends and at the market for eyewear products, which uses the same technology that is used in its self-darkening windshield. The type of information the marketing team was using is referred to as Multiple Choice surveys. focus groups. primary data. secondary data.

Answers

Answer:

secondary data.

Explanation:

Market research can be defined as a strategic technique which typically involves the process of identifying, acquiring and analyzing informations about a business. It involves the use of product test, surveys, questionnaire, focus groups, interviews, etc.

Secondary market research can be defined as a method designed to determine the demographics of a particular target market.

A secondary data can be defined as any form of data that has been obtained or collected earlier by someone else through primary sources for their own purpose and made readily available for other researchers to use. Thus, a secondary data is a type of data that has been previously obtained or collected.

In this scenario, the type of information the marketing team was using is referred to as secondary data because it looked to the Internet to find industry trends and at the market for eyewear products, which uses the same technology that is used in manufacturing its self-darkening windshield.

In conclusion, a secondary data is typically reliant or based on the primary source of information and as such it isn't a first hand experience.

Market efficiency is probably the most controversial concept in finance. Even recent winners of the Nobel Prize in Economics come down on opposite sides of the issue. Nonetheless, it is important for you to grapple with this idea. It has very important practical implications for investment decisions, including (especially) for your personal investment decision. In particular, should you pursue active or passive strategies

Answers

Answer:

Active strategies should be pursued when the market is more volatile, with larger fluctuations over a shorter period of time, that require a more active management of a portfolio, in order to take advantage of fast changing positions in different assets, and also in order to avoid possible losses due to staying in particular positions for too long.

Passive strategies is more long-term focused, and should be pursued when the economy is more stable. Passive strategies should be analyzed carefully before execution because once the passive investment is made, the idea is to keep the position for a long period of time instead of buying and selling constantly as in a active strategy.

Other Questions
What is the highest peak in North America? A. Mt. Saint Helen B. Mt. McKinley C. Mt. Whitney D. Mt. Rainier Please select the best answer from the choices provided A B C D "Why Do We Study the Sun?" How does the Sun help to protect life on Earth? what is the range of the funcion y=x^2 Figure A is a scale image of Figure B. What is the value of x?khan academy 9. Mariah has 28 centimeters of reedand 10 meters of reed for weavingbaskets. How many meters of reeddoes she have? Write your answer as adecimal and explain your answer. Explain, In your own words, why the therapeutic alliance is so important in confronting offenders. Team members Corinne, Kevin, and Tomas decide to share the costof 2 motor controllers and 4 wheels equally. How much does eachmember need to contribute?Please help(write step by step and upload pic or do it here please I appreciate it so much ! ntitative reasoning 3ples603903601533612315235-8H 24 24 180106030 A clnica odontolgica Dentes Felizes calcula o valor de seus atendimentos a partir de uma taxa fixa de R$ 100,00 e R$ 60,00 por cada obturao. Tenant Tomas and landlord Landis enter into a contract for Tomas to rent Landis's home for two years. Halfway through the lease, Tomas decides to install smart lights and a security system that requires intensive modifications to the wiring and electrical system. May Tomas make such improvements? I will mark you brainlist if you helppp me pls and thankyouuu help pls and explain!!!If x^2 + kx + 6 = (x+n)(x + 3) for all values of x, where k and n are constants, what is the value of k?A) 5B) 3C) 2D) 1 Dark skin ( a result of increased melanin production in equatorial populations), is likely a response to ultraviolet radiation because UV radiation causes: 1 ________ does Polly doin the evening?___________________2 ________ phone isringing now?___________________really fast5 ________ does thepostman bring you theletter?___________________6 ________ does Danielride his scooter?___________________9 ________ does Monawork?___________________10 ________ does Tomcan see fish?___________________ A large container holds 4 gallons of chocolate milk that has to be poured into bottles. Each bottle holds 2 pints.If the ratio of gallons to pints is 1: 8, bottles are required to hold the 4 gallons of milk. On January 1, 2017, ARC Inc. issued 100 5-year bonds, with a face value of $1,000 each and a coupon rate of 10%, payable semiannually. The interest is paid on June 30 and December 31 of each year. The market rate of interest at the time that the bonds were issued was 13%, so that the bonds were sold for $892 each.1. Interest expense for the January 1June 30 period was $_____.2. Interest expense for the July1December 31 period was $_____.3. Book value of Bonds on June 30 was $_____.4. Book value of Bonds on December 31 was $_____.5. Interest payment on June 30 was $_____. The Aqua Liquid Assets Money Market Mutual Fund has a NAV of $1 per share. During the year, the assets held by this fund appreciated by 1.4 percent. If you had invested $50,000 in this fund at the start of the year, how many shares would you own at the end of the year Read this passage I am mindful that only yesterday in Birmingham, Alabama, our children, crying out for brotherhood, were answered with fire hoses, snarling dogs and even death. I am mindful that only yesterday in Philadelphia, Mississippi, young people seeking to secure the right to vote were brutalized and murdered. And only yesterday more than 40 houses of worship in the State of Mississippi alone were bombed or burned because they offered a sanctuary to those who would not accept segregation. I am mindful that debilitating and grinding poverty afflicts my people and chains them to the lowest rung of the economic ladder. -Martin Luther King Jr., Nobel Prize acceptance speech, 1964 How does King show that the struggle for freedom and equality is not over? A. By asking the committee to help thestop the violence B. By refusing the award because peace has not been achieved C. By giving examples of violent events that recently took place D. By explaining that he is not an expert in the field of civil rights A town recently dismissed 5 employees in order to meet their new budget reductions. The town had 4 employees over 50 years of age and 16 under 50. If the dismissed employees were selected at random, what is the probability that no more than 1 employee was over 50 You are analyzing ABC Company, a computer manufacturer. You notice that inventory turnover this year is significantly lower than in prior years. You also notice that accounts receivable turnover is significantly lower this year when compared to previous years. Provide three explanations that would be consistent with your observation for inventory turnover and include an explanation of whether these would be of concern to you, as well as what the effect might be on the next period's financial results. In addition, provide three explanations that would be consistent with your observation of the accounts receivable turnover, and explain whether these would be of concern to you.