The Elephant ear canal has a length of 17 cm, and is also an open-closed tube. Assume the speed of sound is 343 m/s.

a) Calculate the fundamental frequency of the Elephant's ear canal.

b) Should sound with that frequency appear to be louder to the elephant, or quieter than half that frequency? Also, can the average human hear this sound? What range of frequencies can the average human hear?

d) Draw a diagram of (i) the displacement of air molecules and (ii) the pressure of the air in the ear canal for the frequency you calculated above. You can draw the ear canal as being a straight tube.

The trunk of the elephant can extend up to 3 m long. It acts like an open-closed tube when the elephant blows through it.

c) Calculate the fundamental frequency of the sound that the Elephant can make with it's trunk.

d) If the Elephant blows even harder they can make the next harmonic. What is the frequency of this sound?

please explain in details

What are diminishing returns to capital?

a)

Poor education leads to a decline in human capital.

b)

Rapid increase in population reduces human capital.

c)

Increasing the stock of capital leads to falls in the level of productivity.

d)

Increasing the stock of capital leads to increases in productivity at a decreasing

rate.

When the government makes cost of living adjustments to social security checks,

a)

there may not be enough of an increase for medical care costs.

b)

there may be too much of an increase for medical care costs.

c)

the increase exactly covers medical care costs.

d)the dollar amount of the social security check does not change.

The State of California increases the amount of food stamps (welfare) it provides to

disadvantaged residents in 2011.

a)

US 2011 GDP rises.

b)

US 2011 Government Spending rises.

c)

both a) and b) are correct.

d)

neither a) nor b) are correct.

Use R programming to resolve this; can you please provide details on the code?

A) Create a dataframe – comparativeGenomeSize with the following vectors:

> organism<-c("Human","Mouse","Fruit Fly", "Roundworm","Yeast")

> genomeSizeBP<-c(3000000000,3000000000,135600000,97000000,12100000)

> estGeneCount<-c(30000,30000,13061,19099,6034)

B) Print the organism and estGeneCount for Human and fruitfly.(1)

C) Add a column to this data frame calculating base pairs per gene. To do this, write a function “genedensity” that takes as arguments the genomesizeBP and estimatedGeneCount information, and calculates from this the estimated bp per gene. (3)

Let X be normally distributed with mean 24 and variance 16 b) Calculate the following probabilities: (2)
– P(X ≤ 20)

– P(X > 29.5)

Write a while loop that prints out standard random normal numbers (use rnorm()) (1)
Using next adapt the loop from the last exercise so that it doesn’t print negative numbers. (2)

In a Harris poll of 514 human resource professionals, 45.9% said that body piercings and tattoos were big
grooming red flags. A professor of personnel managements believes that fewer than half of all human resources
professionals would say that body piercings and tattoos were big grooming red flags. Use a significance level of
0.01 and 0.05
H0: _____ _____ ______
Ha: _____ _____ ______
a. Follow our procedure on page 2 of our Unit 3 Day 1 notes to bracket the claim, etc.
b. Which word or phrase in the claim determines the inequality in the alternative hypothesis:
_________________
c. Which word, phrase or symbol in the problem tells us that this problem involves a test for the proportion,
and not a mean? _______________________________________________
d. Fill in the hypothesis.
e. Explain why the number “45.9” does not appear in the hypothesis: _______________________
_____________________________________________________________________________________
f. The p-value is 0.032. Find the outcome of the test and write a plain English interpretation of the outcome
using both α = 0.01 and α = 0.05.

Chlorides enter the great lakes from human activity, but the most important sources is from the salting of roads in the winter to make them safe for driving. High Chloride concentrations (salty water) are damaging to the aquatic ecosystem. If, the great lakes would have chloride levels of > 20 mg/L, why would this be a problem? What uses of the lakes might be threatened by such high chloride concentrations? How do you think the lakes will be changed as a result of such high chloride concentrations?

Suppose you are the chief environmental engineer in charge of the joint Canadian – U.S. great lakes water quality commission. You have to set water quality limits for chlorides, recognizing that the limits you set would be considerably less than 20 mg/L and that changes in human lifestyle would be needed if the chloride concentration is to remain below these standards. What type of decisions would you be making? (there may be more than one, and there is no “correct” answer to this question.

For questions 3 and 4, please remember that only one RNA strand is being synthesized, and only the template strand of the DNA is being transcribed.

3. (3 points) E. coli RNA polymerase adds ribonucleotides to an RNA strand at a rate of 22 per second. The size of the transcribed region of the largest gene in E. coli is 1538 bp. How long (in seconds) will it take RNA polymerase to complete transcription of an average-sized gene? (Round off to the nearest whole number):

Please show your calculations in the space below.

4. (4 points) The average size of the transcribed region in a human gene is 10,000 bp. If a eukaryotic RNA polymerase adds ribonucleotides at a rate of 28 per sec, how long (in minutes) will it take the RNA polymerase to complete transcription of an average human gene? (Round off to the nearest whole number):

Please show your calculations in the space below.

1. Intelligence is an adaptation to a knowledge-using, socially interdependent lifestyle--the “cognitive niche.”

True

False

2. What did Alfred Russel Wallace argue about the theory of evolution?

a. Wallace notoriously claimed that the theory of evolution by natural selection was adequate to explain human intelligence.

b. Wallace notoriously claimed that the theory of evolution by natural selection was inadequate to explain human intelligence.

3. In biology, a “niche” is sometimes defined as:

a. the role an organism occupies among its family.

b. the role an organism occupies in an ecosystem.

c. All of the above.

d. None of the above.

4.

Humans possess an ability of metaphorical abstraction, which allows them to co-opt faculties that originally evolved for physical problem-solving and social coordination, apply them to abstract subject matter, and combine them productively.

True or False

5. Where was the cradle of our species?

a. Asia

b. Eastern Africa

c. The New World

d. Western Europe

The most common ethical issues in international business involve

Employment practices
Human rights
Environmental pollution
Corruption

Moral Obligations and Social Responsibility refers to the idea that business people should take the social consequences of economic actions into account when making business decisions, and that there should be a presumption in favor of decisions that have both good economic and good social consequences.

What are the moral obligations of multinational companies with regard to the common ethical issues?

In this discussion we will focus on the global environmental issues. We will evaluate employment practices and human rights in other assignments.

Is globalization the cause of global environmental issues? Do you think globalization can be the cure for these issues?

Here is a great article from the OECD sources that you should read before posting your comments.

What is the impact of globalization on the environment https://files.acrobat.com/a/preview/c476f1a4-a9b0-4b89-bd32-e61b13973c14

Cholesterol is vital to human health and well being. It plays an important
role in the structure, fluidity and permeability of the cell membrane, and helps
synthesize vitamin D and various hormones. Although cholesterol is essential for
human health, high levels of cholesterol in the blood stream can lead to damaged
blood vessels and cardiovascular disease. The cholesterol level in mg/dl of a
group of Canadian adults is assumed to be normally distributed.
1. Five individuals are randomly selected from this group. Below are the
measurements of their cholesterol levels:
120 116 130 132 111
Compute a 95% confidence interval for the mean cholesterol level.
2. Fifteen individuals are randomly selected from this group.
120 116 130 132 111 122 130 111 143 127 129 135 150 121 112.
Compute a 95% confidence interval for the mean cholesterol level.
3. Based on these two confidence interval constructions, what do you conclude?

You are an MD/PhD student studying left-right laterality defects in humans. You are monitoring a pregnancy in which the heart and stomach are positioned on the incorrect side of the body, while the rest of the organs are positioned normally.

a) [2pts] What would be the name of this type of visceral organ defect?

You are able to perform corrected surgery on the infant soon after birth. You perform a genetic analysis and discover this child had a mutation in a stretch activated calcium channel.

b) [2pts] What are the normal roles of stretch activated calcium channels?

c) [4pts] Why might this mutation cause the left-right laterality defects you observed?

d) [4pts] Assuming that mouse and human left-right patterning are achieved through similar mechanisms what would you predict Nodal expression in the LPM would have looked like in this human patient during early development? Explain your thinking.