A typical American has a carbon footprint of 40-ish tonnes per year. If somehow, magically, all of that fossil-fuel consumption could be converted to nuclear fission energy, how much nuclear reactor fuel would you need to use? To perform this calculation, look up the energy you get for every carbon triple bond you use up (use that for the carbon mass-to- energy conversion, assming you release one carbon atom for every triple bond broken). You will also need to look up the fission energy per uranium atom, and the mass of the uranium atom, or equivalent.

That is, if an American converts 40 tonnes of carbon fossil-fuel usage per year over to uranium fission reactor nuclear energy, how much uranium would that person use per year? Give your answer in kg.

Now consider nuclear fusion: Look up the energy per atom and atomic mass for fusion reactions, in some ideal future in which fusion is awesome. How much fusion fuel would each American need each year? I prefer this answer in KG.

Suppose that Dom began a landscaping business in 2020. In that year, he adopted the last-in first-out (LIFO) inventory-flow method for his business inventory of shrubbery by using it for the year on his tax return.

In 2019, he purchased the following four batches of shrubs (total cost per batch below).

   Shrubs         Purchase Date        Direct Cost         Other Inventoriable Costs      Total Cost
      200               July 21                 $ 2,000              $ 200                                $ 2,200

      150              August 15              $ 2,000              $ 100                                $ 2,100
      100             October 30              $ 2,200              $ 400                                $ 2,600
      140            November 10            $ 2,700              $ 100                                $ 2,800

In 2020, Dom sold 200 shrubs. In 2021, Dom purchased three more batches of shrubs at the following total cost per batch below. Just before year end in 2021, he also sold 50 shrubs:

                       Shrubs             Purchase Date               Total Cost
                        100                 Early spring                   $ 2,400
                        125                    Summer                      $ 2,500
                        100                        Fall                         $ 2,600

a.     (10 points) What cost of goods sold and ending inventory would Dom record if he elects to use the LIFO method in 2020?

b.    (10 points) What will be his cost of goods sold and ending inventory in 2021 under the LIFO method?

c.     (10 points) How would you answer (a) change if Dom had initially selected the first-in, first-out (FIFO) method instead of LIFO?

d.    (10 points) How would you answer (b) change if Dom had initially selected the first-in, first-out (FIFO) method instead of LIFO?

We can make a simple model of the human vocal tract as an open-closed tube extending from the opening of the mouth to the diaphragm

Q: What is the length of this tube if its fundamental frequency equals a typical speech frequency of 240 Hz ? The speed of sound in the warm air is 350 m/s.

A publisher reports that 52% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 350 found that 46% of the readers owned a laptop. Determine the P-value of the test statistic. Round your answer to four decimal places.

A wheel slows from 500 rad/s to rest in 80.0 seconds due to a frictional force that is applied to the outer rim of the wheel. Treat the wheel as a solid disk with radius R = 12.0 cm and mass M = 350 grams. What is the magnitude of the frictional force that causes the wheel to slow to a stop?

Suppose that as the result of the crisis in Greece, the Euro depreciates against the US dollar. Why should you care when the US dollar strengthens relative to other currencies? Describe the ways this could impact your life and that of your friends and family in the US.

Word count 350 words and one reference

Investment will pay $100 at the end of each of the next 3 years 200 at the end of year 4 350 at the end of yearr 5 and 550 at the end of year 6 if other investments of equal risk earn 4% annually what is its present value Round your answer to the nearest cents.