ARB 1000 Lecture 22: Arabic vocab (general) 22

A 1.70-mm string of weight 0.0122 NN is tied to the ceiling at its upper end, and the lower end supports a weight WW. Neglect the very small variation in tension along the length of the string that is produced by the weight of the string. When you pluck the string slightly, the waves traveling up the string obey the equation
y(x,t)=(8.50mm)cos(172rad⋅m−1x−2730rad⋅s−1t)y(x,t)=(8.50mm)cos(172rad⋅m−1x−2730rad⋅s−1t)
Assume that the tension of the string is constant and equal to W. How much time does it take a pulse to travel the 

I'll be thankful if someone can help me to do this!

According to this:

Read the following New York Times article and then answer the questions below and then answer the questions New Clues to Sex Anomalies in How Y Chromosomes Are Copied

http://www.nytimes.com/2009/09/15/science/15chrom.html?scp=1&sq=sex%20anomalies&st=cse

This activity contains 5 questions.

5.

You must make 2 reflective, thoughtful, deep, constructive critiques of your class mates posts. as part of a threaded discussion following their initial post. The critiques must not about you, but about science!

Here's the first peson. Needs to reply for some of her answers as it says above.

1. When discarding bad genes, the Y chromosomes recombines with itself.

2. The centromere functions to hold a pair of copied chromosomes together.

3. A person with Turner’s syndrome is born with a single X chromosome.

4. The male-determining gene on the Y chromosome is located close to the end of the left arm.

5. An individual can have some cells with no Y chromosomes and other cells with double Y chromosomes, due to the differing variants present in regards to the genotypes of the cells in a single individual. When the Y chromosome is compared to other chromosomes such as the X chromosome, mutations and deviation in the distance of the centromere are much more prevalent due to the Y chromosome lacking a backup system to promote repairs.¹ (Links to an external site.) Even if a mutation caused a condition such as the XYY syndrome where two Y chromosomes are present, that mutation and genotype would not be present in every single cell of the individual.² (Links to an external site.) The presence of different genotypes offers an tentative explanation to as why a single individual can have some cells with no Y chromosomes while also housing other cells with double Y chromosomes.

Source 1 http://www.nytimes.com/2009/09/15/science/15chrom.html

Source 2 https://www.healthline.com/health/xyy-syndrome

Here's the second person. Needs to do the same as it says above.

1. Itself

2. Centromere

3. A single X chromosome

4. Close to the end of the left arm

5. Briefly explain how an individual can have some cells with no Y chromosome and other cells with a double-Y chromosome.

In some cases, the Y chromosome reaches over to a neighboring counterpart and the two chromosomes fuse. This results in the loss of part of the chromosome. Jacob’s Syndrome is sometimes also called XYY syndrome because the person has two Y chromosomes. Although a person can survive with this genetic mutation, some physical traits may be observed such as taller than average height, weak muscle development or late speech development.

Source 1 https://www.healthline.com/health/xyy-syndrome

Source 2 http://www.isna.org/faq/y_chromosome

Question:

An organization is has $120,000 to invest and is currently considering a number of alternatives. One investment is to fund production process in which new machines will be purchased. The machines are expected to save production cost which is given below as Annual Income. The machines are expected to be part of the production process for 6 years. The company has a minimum attractive rate of return (MARR) of 10.0% compounded monthly. The following data is available for these new machines:

This organization has also the option to buy bonds which have the following properties: - Bond is available at unit price of $1,000 - Face value of each bond is $9,00 - Nominal bond rate (nominal coupon rate) is 9.5%. - Bond maturity is 6 years after purchase. - Bond revenues (coupons) are received every month. - Bond is sold at face value at the end of the sixth year.

a] Calculate the Net Present Worth (NPW) and Internal Rate of Return (IRR) of alternatives A to D.

b] Rank these alternatives (A to D) based on NPW values.

d] Using incremental IRR analysis, rank these four alternatives based on economic feasibility.

e] Using incremental benefit-cost analysis, rank these four alternatives based on economic feasibility.

f] This organization now wants to allocate the investment fund of $120,000. The management is considering a mix of options which involve investing in A, B, C, D, or Bonds. The organization cannot invest twice in any single alternatives A to D. That is, it cannot invest in A twice. However, it can invest in two or more different alternatives. That is, it can invest in A and B. Bonds can also be bought in unlimited quantities. Based on this information, find the best fund allocation plan. Show clearly your calculation steps