5.a. What class of meteorite should have a composition closest to cosmic abundances? Why?

5.b. Most asteroids are C-type, but most meteorites are not carbonaceous chondrites. Why might this be?

5.c. Consider three types of meteorites: irons, carbonaceous chondrites, and enstatite
chondrites. What are likely condensation temperatures for these meteorites? Near which
planets would these temperatures be found?

2. The force of gravity on a baby elephant near the Earth’s surface is 260 lb (the elephant is about R_E = 6371 km from the Earth’s center). What will be the elephant’s weight if the elephant is moved twice as far from the Earth’s center?

Provide an example of a real-world industry or market (current or historical) that has not been described by another student or that is in the text that would be described by economists as a monopoly (near-pure or natural) and provide a summary of how that monopoly became a monopoly, how it maintained monopoly power, and if applicable, how it lost its monopoly power. Provide a link to your references (Do not use Wikipedia).

1.Why do countries with less independent central banks tend to have higher inflation rates? Is it possible for the central banks to increase output and reduce unemployment in the long run? In the long run, is the German model a good one? Explain why or why not.

2. In your opinion, what are the top three challenges in the global economy we face in the near future?

A) The medium-power objective lens in a laboratory microscope has a focal length fobjective = 4.00 mm . If this lens produces a lateral magnification of -37.0, what is its "working distance"; that is, what is the distance from the object to the objective lens B) What is the focal length of an eyepiece lens that will provide an overall magnification of -115? Assume student's near-point distance is N = 25 cm.

You must defend Energizer Holdings by using the opinions of experts and your own view of the company’s future. Be aware that the so-called experts tend to be overoptimistic about firms’ potential so it is ok to be cautions.

What are your expectations/thoughts for energizer holdings and do you think that energizer holdings will see an improvement in the near future. What are the pros and cons of energizer holdings.

9. The process of DNA replication creates a particular problem for replicating the ends of linear chromosomes.
a) Describe why the DNA replication machinery has difficulty replicating DNA ends.

b) Telomerase has been identified as an enzyme that can reverse the outcome of end replication.
Describe the near-universal mammalian chromosome telomere sequence and how telomerase solves the problem of end replication.

Astronomy:

6.What is a brown dwarf? Is it different from a proto-star? How?

7. What different types of gas do astronomers find in the interstellar medium?

8. Astronomers believe the Sun formed with other stars near the Orion Nebula. If that is true, why is the Sun here and not there?

9. Astronomers can tell the age of a star by the age of its cluster. How is this determined?