29C

MRI Magnetic Resonance Imaging takes exquisite images of the brain and other parts of human body. The magnetic field B is generated by a solenoid of length 3 feet and diameter of 3 feet. The B field generated is one (1) T. The largest current the wire can carry is 100 A.

a) How many turns of solenoid is needed? Eq. (29.17)

b) Find the total length of solenoid wire in miles. A proton (hydrogen nucleus) has nuclear magnetic moment μ = 8.8e-8 eV/T. It has two energy states ± μ∙B. Transitions between the two energy states give radiation detected by radiofrequency detector. For a 1-T magnetic field, find the:

c) energy difference in neV (e-9 eV) between the two states.

d) frequency of this signal. (This is well known in MRI.) Eq. (38.4)

Many human diseases are genetically transmitted (for example, hemophilia or Tay-Sachs disease). Here is a simple model for such a disease. The genotype aa is diseased and dies before it mates. The genotype Aa is a carrier but is not diseased. The genotype AA is not a carrier and is not diseased.

a. If two carriers mate, what are the probabilities that their offspring are of each of the three genotypes?

b. If the male offspring of two carriers is not diseased, what is the probability that he is a carrier?

c. Suppose that the non-diseased off spring of part (b) mates with a member of the population for whom no family history is available and who is thus assumed to have probability p of being a carrier ( p is a very small number). What are the probabilities that their first offspring has the genotypes AA, Aa, and aa?

d. Suppose that the first offspring of part (c) is not diseased. What is the probability that the father is a carrier in light of this evidence?

full explanation i dont understand thanks

Your employer, a midsized human resources management company, is considering expansion into related fields, including the acquisition of Temp Force Company, an employment agency that supplies word processor operators and computer programmers to businesses with temporarily heavy workloads. Your employer is also considering the purchase of Biggerstaff & McDonald (B&M), a privately held company owned by two friends, each with 5 million shares of stock. B&M currently has free cash flow of $24 million, which is expected to grow at a constant rate of 5%. B&M’s financial statements report short-term investments of $100 million, debt of $200 million, and preferred stock of $50 million. B&M’s weighted average cost of capital (WACC) is 11%. Answer the following questions:

1. Use a pie chart to illustrate the sources that comprise a hypothetical company’s total value. Using another pie chart, show the claims on a company’s value. How is equity a residual claim?

2. Suppose the free cash flow at Time 1 is expected to grow at a constant rate of  forever. If , what is a formula for the present value of expected free cash flows when discounted at the WACC? If the most recent free cash flow is expected to grow at a constant rate of  forever (and ), what is a formula for the present value of expected free cash flows when discounted at the WACC?

1. Which variables occur in nature that could have a negative impact on human? Select all that apply

• Changes in rainfall and water supply for soil

• Ecology of microbial growth

• There is adequate food supply and always will be

• Risks for waterborne and food-borne pathogens in drinking water, seafood and fresh produce because of climate change variability

• The effect of climate change upon weather extremes (droughts, floods and storms)

2. A community health nurse is teaching a group of clients about modes of transmission. Which statement made by the client indicates correct interpretation about the modes of transmission. Select all that apply

• Vector transmission requires contact with a non human carrier such as an animal or insect

• Direct transmission requires contact with a contaminated inanimate material

• Indirect transmission is also known as vehicle-borne illness

• Food and water related illnesses are considered to be spread by indirect transmission

• Airborne transmission commonly occurs from coughing and sneezing

3. An instructor is discussing the various legislative acts that have focused on health care. Which statement by the class indicates they understand the focus of the Social Security Act?

• Increased services to the poor

• Expanded coverage for children

• Increased Privacy of patient information

• Increased availability of public health programs

4. Student nurses are questioning the benefits of joining a professional nursing organization during a class discussion. Which statement by the instructor will best address their concern? Select all that apply

▪ They have successfully elevated the nursing professionalism

▪ They have developed the paradigms that influence and affect public health

▪ They have given voice to the inequalities that affect the society

▪ They have a long and consistent relationship with public policy

▪ They are regarded as major player in Washington when discussing health care policy

5. And instructor is discussing the various legislative acts that have focussed on healthcare. Which statement by the class indicates they understand the focus of the social security act.

• Expanded coverage for children

• Increased availability of public health programs

• Increase services to the poor

• Increase privacy of patient information Increased availability of public health programs

6. The community health nurse is a member of a legislative group that is evaluating a suggested new policy. Which factor should the nurse question first concerning the policy?

• What is the result?

• Who benefits from it?

• How much it cost?

• Why is it in place?

1. L. F. Gilbreath, the vice president of human resources for a major U.S. airline, wants to compare four programs for training employees to perform a certain task. Twenty employees are randomly assigned to the training programs, with five in each program. At the end of the training period, the number of times each employee can perform the task in a five-minutes period is recorded as follows: PROGRAM 1 PROGRAM 2 PROGRAM 3 PROGRAM 4 9 10 12 9 12 6 14 8 14 9 11 11 11 9 13 7 13 10 11 8

If L. F. conducts an analysis of variance [ANOVA] test to compare the training programs, a. State the null and alternative hypotheses associated with the test. b. If SSB = 54.95 and SST = 96.55, what is the calculated value of the associated test statistic? c. If the level of significance equals 0.05, what is the critical value of the associated test statistic? d. State your decision regarding the null hypothesis. e. State your conclusion (meaning, describe what the decision means in this problem). f. If Tukey’s HSD equals approximately 2.92, which training programs differ significantly from each other in terms of the number of times employees can perform the task in a five-minutes period, on average?

Assume that human body temperatures are normally distributed with a mean of

98.19 degrees Upper F98.19°F

and a standard deviation of

0.61 degrees Upper F0.61°F.

a. A hospital uses

100.6 degrees Upper F100.6°F

as the lowest temperature considered to be a fever. What percentage of normal and healthy persons would be considered to have a​ fever? Does this percentage suggest that a cutoff of

100.6 degrees Upper F100.6°F

is​ appropriate?

b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature​ be, if we want only​ 5.0% of healthy people to exceed​ it? (Such a result is a false​ positive, meaning that the test result is​ positive, but the subject is not really​ sick.)

Click to view page 1 of the table.

LOADING...

Click to view page 2 of the table.

LOADING...

a. The percentage of normal and healthy persons considered to have a fever is

nothing​%.

Traditional methods that forensic investigators use to determine human age require the destructive testing of bones or teeth. This presents a problem for crime scene investigators when the body of the deceased is not available.

A recently developed DNA-based blood test now enables forensic investigators with only a drop of blood for evidence to determine the age of the person who was bleeding. The test also works on dried bloodstains even those revealed by a heat-vision camera. This could help detectives reopen cases that went cold years ago.

This Excel file Blood Test for Age has data on the DNA-based blood test measurements of 321 volunteer human subjects with known ages from just under 2 to just over 96.

We would like to use a linear model to model the relationship between the blood test measurements and human age. A scatterplot of the data with the blood test measurements as the explanatory (x) variable and age as the response (y) variable indicates that a linear model is appropriate. I suggest you create your own scatterplot to verify this and to better understand the data.

Question 3. Help Holmes solve this murder mystery by calculating a 90% prediction interval for the age of the person whose blood is on the golf club (use 2 decimal places).

lower bound of prediction interval
upper bound of prediction interval

Question 4. The murdered wealthy philanthropist was 35 years old. The police chief would like to know if the golf club found by Holmes could possibly be the murder weapon. What should Holmes tell the police chief? (One submission only).

A 90% confidence interval will indicate that it is more likely that the blood on the golf club is from the murdered philanthropist.The golf club is probably not the murder weapon since it is unlikely that the blood on the golf club is from a person whose age is similar to that of the murdered philanthropist.    The golf club could be the murder weapon since there is statistically valid evidence that the blood on the golf club is from a person similar in age to the murdered philanthropist.

You are investing the function of gene X in human cells. You have two different cell types in culture. One is the hepatic cells isolated from an individual. The other is the hematopoietic stem cells isolated from the same individual. Upon quantitative reverse transcriptase (RT)-PCR and Western blot analysis, you discovered that hepatic cells express higher level of gene X than hematopoietic stem cells do. Another difference you noticed were that protein X (produced from gene X) from hematopoietic stem cells is 54 kDa in size but it is 68 kDa from hepatic cells. Explain what are potential biological processes that contributed on the differential gene expression levels and different sizes of the same gene.

Life science 2 thx a lot!

1. Factors that support human migration to Mars include

A. runaway climate change

B. global pandemics

C. possible nuclear war

D. possible asteroid strikes

E. all of the above

2. A key difficulty of preparing a computer system to house human brain information is trying to emulate the signaling pathways of the nervous system.

true

false

3. Loss of bone mass during aging leads to

A. osteogenesis

B. osteosarcoma

C. osteoporosis

D. loss of connective tissue

4. Signs and symptoms of aging can be slowed by

A. eating a healthy diet

B. exercising

C. caloric restriction

D. socialization

E. all of the above

5. In order for cross-species transmission to occur

A. there must be contact between the virus and host

B. the infection needs to be amplified within the host

C. variants need to be produced in the new host that allow for transfer to other humans

D. all of the above

6. The Fermi Paradox attempts to explain the likelihood of finding intelligent life in other galaxies.

true

false

7. The most basic part of our brain is the part that controls our autonomic functions, referred to as the mammalian brain.

true

false

8. In the absence of illness, high mental competence is expected to last until approximately what age

A. 80

B. 35

C. 65

D. 50

9. Aging reduces all of the following in the circulatory system except

A. white blood cells

B. hemoglobin

C. lymphocytes

10. Progeria and Werner syndrome, which both cause premature aging, are a result of

A. genetic causes

B. environmental factors

C. epigenetics

11. Caloric restriction, exercise, and a healthy diet

A. speed up the aging process

B. slow down the aging process

C. have no effect on the aging process

12. If humans live on Mars, it is hypothesized that in the next 100,000 years, humans will develop

A. eye-shine

B. smaller nostrils

C. smaller eyes

You are investing the function of gene X in human cells. You have two different cell types in culture. One is the hepatic cells isolated from an individual. The other is the hematopoietic stem cells isolated from the same individual. Upon quantitative reverse transcriptase (RT)-PCR and Western blot analysis, you discovered that hepatic cells express higher level of gene X than hematopoietic stem cells do. Another difference you noticed were that protein X (produced from gene X) from hematopoietic stem cells is 54 kDa in size but it is 68 kDa from hepatic cells. Explain what are potential biological processes that contributed on the differential gene expression levels and different sizes of the same gene.