A patient with a brain tumor is undergoing a gamma knife treatment (see Section 31.4). Multiple sources of 60Co emit two gamma rayswith a total energy of 2.50 MeV. If the activity of all the sources combined is 5.00 mCi, what is the biologically equivalent dosedelivered to the brain tumor in one hour? The mass of the tumor is 0.150 kg. Since the half-life of 60 Co is 5.27 yr, we can assume theactivity remains constant during the procedure.NumberUnits

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Answered: A patient with a brain tumor is…

FINANCIAL ACCOUNTING

10th Edition

ISBN:9781259964947

Author:Libby

Publisher:Libby

Chapter1: Financial Statements And Business Decisions

Section: Chapter Questions

Problem 1Q

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The hospital is considering the purchase of imaging equipment worth $25,000 to improve its visual capture results, and improve outcomes. The operating costs will be reduced by $7,000 per year. The computer has an estimated life expectancy of 5 years, and an estimated salvage value of $5,000. What is the profitability index if the discount rate is 8%. Ignore reimbursement considerations.
It is estimated that there are 35 deaths for every 10 million people who use airplanes. A company that sells flight insurance provides $100,000 in case of death in a plane crash. A policy can be purchased for $1. Calculate the expected value and thereby determine how much the insurance company can make over the long run for each policy that it sells. The expected value is $ (Round to the nearest cent.) ITS
Use the following information for the next four questions: The Anti-Zombie Corporation is considering expanding one of its production facilities to research a new type of virus, which will hopefully not cause a future zombie outbreak. The project would require a $24,000,000 capital investment and will be depreciated (straight-line to zero) over its 3 year life. They know that they will be able to salvage $6,000,000 for the equipment at that time. Incremental sales are expected to be $16,000,000 annually for the 3 year period with costs (excluding depreciation) of 40% of sales. The company would also have to commit initial working capital to the project of $2,000,000. The company has a 30% tax rate, and requires a 15% rate of return for projects of this risk level.
Suppose in a given state's new insurance marketplace, with community rating and no restrictions on who can buy at the community rate, the risk pool (distribution of expected health costs) is as follows: 20% of eligible enrollees' expected health costs = $1,000 (per year) 50% of eligible enrollees' expected health costs = $2,000 10% of eligible enrollees' expected health costs = $3,000 20% of eligible enrollees' expected health costs = $6,000 What would the community premium rate for this risk pool be if we also assume 10% loading costs for the insurer to cover its admin costs.
A company is going to change all light bulbs of its buliding. The initial cost is 57000. all bulbs has been replaced at the same time. what if the bulbs have been replaced during 5 yrs period. Inflation rate is 3 percent. energy saving per yr is 6000 dollars. (compare replacement at the same time to the period of 5 yrs
Holly Farms is considering two environmental chambers to accomplish detailed laboratory confirmations of online bacteria tests in chicken meat for the presence of E. coli 0157:H7 and Listeria monocytogenes. There is some uncertainty about how long the D103 chamber will be useful. A realistic estimate is 3 years, but pessimistic and optimistic estimates of 2 years and 6 years, respectively, are also reasonable. The estimated salvage value will remain the same. Using an interest rate of 10% per year, determine if any of the D103 estimates would result in a lower cost than that of the 490G chamber for a 6-year planning period. Chamber D103 Chamber 490G Installed cost, P, $ –400,000 −230,000 AOC, $ per year −4,000 −3,000 Salvage value at10% of P, $ 40,000 23,000 Life, years 2, 3, or 6 2 The D103 estimates would result in a lower cost than that of the 490G chamber for a (Click to select) 3 6 2 -year planning period.
The company you work for is evaluating projects to upgrade their information management systems. Two projects under consideration are an upgrade of the account management system with an IRR of 8% and an upgrade of the resource management system with an IRR of 5%. If the discount rate is actually 6%, which project should the company undertake?
A machine that produces a certain piece must be turned off by the operator after each piece is completed. The machine "coasts" for 15 seconds after it is turned off, thus preventing the operator from removing the piece quickly before producing the next piece. An engineer has suggested installing a brake that would reduce the coasting time to 3 seconds. The machine produces 50,000 pieces a year. The time to produce one piece is 1 minute 45 seconds, excluding coastint time. The operator earns $13 an hour and direct costs for operation are $2 an hour. The direct costs are incurred whenever the operator has to work. The brake will require servicing every 587 hours of operation. It will take the operator 30 minutes to perform the necessary maintenance and will require $60 in parts and material. The brake is expected to last 7,500 hours of operation (with proper maintenance) and will have no salvage value. How much could be spent for the brake if the Minimum Attractive Rate of Return is 10%…
Your first job as an engineer is to purchase a new rotary vacuum-drum filter with a capacity of 1100 ft-. Your company purchased a similar filter eight years ago with a capacity of 700 ft- for $26,000. After checking the literature, you determine the cost index was 429 eight years ago and is 548 today. If the power-sizing exponent for this type of equipment is 0.52, estimate the cost of the new filter.
Suppose that Project A has a life of 6 years and Project B has a life of 4 years. How many times (after the initial project life) would each project need to be repeated in order to conduct an analysis with the replacement change approach? O a. Project A would need to be repeated 5 times and Project B would need to be repeated 3 times b. Project A would need to be repeated 3 times and Project B would need to be repeated 5 times. c. Project A would need to be repeated twice and Project B would need to be repeated twice. O d. Project A would need to be repeated once and Project B would need to be repeated twice. e. Project A would need to be repeated once and Project B would need to be repeated once. O 1.
The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is 8.8¢/kWh, and the clothes dryer is used for 700 hours in a year, what is the power rating of the clothes dryer? Explain in depth and clearly.

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