A vehicle A is stuck on the railroad tracks as a train B approaches with a speed of 120 km/h. As soon as the problem is detected, the train’s emergency brakes are activated, locking the wheels and causing the train’s wheels to slide relative to the tracks. If the coefficient of kinetic friction between the wheels and the track is 0.2, use the workenergy principle to determine the minimum distance dmin at which the brakes must be applied to avoid a collision under the following circumstances: (a) The train consists of just a 195,000 kg locomotive. (b) The train consists of a 195,000 kg locomotive and a string of cars whose mass is $10 \times 106 kg$, all of which can apply brakes and lock their wheels. (c) The train consists of a 195,000 kg locomotive and a string of cars whose mass is $10 \times 106 kg$, but only the locomotive can apply its brakes and lock its wheels. Treat the train as a particle, and assume that the railroad tracks are rectilinear and horizontal.

The shoulder height $h$ (in centimeters) of a male African elephant can be modeled by

$$h=62.5 \sqrt[3]{t}+75.8$$

where $t$ is the elephant's age in years. Find the ages of two elephants, one with a shoulder height of 150 centimeters and the other with a shoulder height of 250 centimeters.

From the list below, supply the words needed to complete the paragraph. Some words will not be used.

veritable

analgesic

discretionary

flummox

moribund

noisome

draconian

Randy's decision to go camping was entirely ____________ but after the experience, he knew that he wouldn't be returning to the great outdoors again in the near future. On the first day, a bee stung him near his eye and caused it to swell shut. That night, as he applied a topical ____________ to reduce the pain of the sting, he was overwhelmed by the ____________ odor of a skunk-a skunk in his tent. Once he'd taken an emergency bath in the river, after being sprayed by the skunk, Randy helped his family pack up the car and leave, three days early. Randy's bad luck on the trip ____________ him; he had never had such a miserable time in the wilderness. He thought that the trip might have renewed his ____________sense of adventure after working eight years in an office cubicle as a computer network administrator, but instead, it caused him to think of how great it would be to go home to a clean shower, relax on the sofa, and maybe watch a movie in his skunk- and insect-free living room.

A.W., a $52$-year-old woman disabled from severe emphysema, was walking at a mall when she suddenly grabbed her right side and gasped, "Oh, something just popped." A.W. whispered to her walking companion, "I can't get any air." Her companion yelled for someone to call 911 and helped her to the nearest bench. By the time the rescue unit arrived, A.W. was stuporous and in severe respiratory distress. She was intubated, an IV of lactated Ringer's (LR) to KVO (keep vein open) was started, and she was transported to the nearest emergency department (ED).

On arrival at the ED, the physician auscultates muffled heart tones, no breath sounds on the right, and faint sounds on the left. A.W. is stuporous, tachycardic, and cyanotic. The paramedics inform the physician that it was difficult to ventilate A.W. A portable chest x-ray (CXR) shows an $80 \%$ pneumothorax on the right.

What instructions do you need to give to the nursing assistive personnel (NAP) who is working with A.W.?

During the late 1980s, Ryan White was the face of AIDS for many Americans. Ryan contracted AIDS through a blood transfusion. Many members of his community mistakenly believed that AIDS could spread through causal contact. They pressured the school board to ban Ryan from attending school. Ryan's family took his case to court, and he was eventually allowed to return to school. Ryan became an AIDS educator. He spoke of the need for everyone to learn about AIDS and to treat affected people with compassion and dignity. Ryan lived for six years following his AIDS diagnosis. He died in 1990 at age 18. Later that year, Congress passed the Ryan White Comprehensive AIDS Resources Emergency (CARE) Act. Today, the act provides about $1.5 billion annually to care for people living with HIV/AIDS. What is the purpose of this passage? A. To describe an early case of AIDS. B. To describe the fear of HIV/AIDS. C. To show how Ryan fought AIDS. D. To blame public officials.

Study of why EMS workers leave the job. An investigation into why emergency medical service (EMS) workers leave the profession was published in the Journal of Allied Health (Fall 2011). The researchers surveyed a sample of 244 former EMS workers, of which 127 were fully compensated while on the job, 45 were partially compensated, and 72 had noncompensated volunteer positions. The numbers of EMS workers who left because of retirement were 7 for fully compensated workers, 11 for partially compensated workers, and 10 for noncompensated volunteers. One of the 244 former EMS workers is selected at random. Find the probability that the former EMS worker was either fully compensated while on the job or left due to retirement.

Posting errors are identified in the following table. In column (1), enter the amount of the difference between the two trial balance columns (debit and credit) due to the error. In column (2), identify the trial balance column (debit or credit) with the larger amount if they are not equal. In column (3), determine the account(s) affected by the error. In column (4), indicate the amount by which the account(s) in column (3) is under- or overstated. Item (a) is completed as an example.

Read the excerpt from the Native American (Blackfeet) story "The Orphan Boy and the Elk Dog." Then, answer the question that follow.

He grew up into a fine young hunter, tall and good-looking in the quilled buckskin outfit the chief's wife made for him. He helped his grandfather in everything and became a staff for Good Running to lean on. But he was lonely, for most people in the camp could not forget that Long Arrow had once been an outcast. "Grandfather," he said one day, "I want to do something to make you proud and show people that you were wise to adopt me. What can I do?"

Good Running answered, "Someday you will be a chief and do great things." "But what's a great thing I could do now, Grandfather?" The chief thought for a long time. "Maybe I shouldn't tell you this," he said. "I love you and don't want to lose you. But on winter nights, men talk of powerful spirit people living at the bottom of a faraway lake. Down in that lake the spirit people keep mystery animals who do their work for them. These animals are larger than a great elk, but they carry the burdens of the spirit people like dogs. So they're called Pono-Kamita-Elk Dogs. They are said to be swift, strong, gentle, and beautiful beyond imagination. Every fourth generation, one of our young warriors has gone to find these spirit folk and bring back an Elk Dog for us. But none of our brave young men has ever returned." "Grandfather, I'm not afraid. I'll go and find the Elk Dog." "Grandson, first learn to be a man. Learn the right prayers and ceremonies. Be brave. Be generous and open-handed. Pity the old and the fatherless, and let the holy men of the tribe find a medicine for you which will protect you on your dangerous journey. We will begin by purifying you in the sweat bath."

So Long Arrow was purified with the white steam of the sweat lodge. He was taught how to use the pipe, and how to pray to the Great Mystery Power. The tribe's holy men gave him a medicine and made for him a shield with designs on it to ward off danger.

What supernatural qualities do Elk Dogs have?

A. They are kept by and do work for the spirit people.

B. They are swift and gentle.

C. They can carry much heavier loads than dogs can.

D. They are brave and generous.

You continue to monitor S.K. for the next few hours. Her respiratory status remains stable and she is feeling more comfortable. The physician prescribes birth control pills to control he r bleeding. He tells her to take one pill four times a day for the next 5 days or until her bleeding stops. Once the bleeding has stopped, she should continue using the medication, one pill per day, for the rest of the cycle, then continue to use the pills for at least three cycles. She will need to follow up with her OB/GYN.
Which statements indicate that S.K. understands the discharge instructions? Select all that apply.
a. "I can take 325 mg of aspirin ever y 6 hours for the cramping pain:'
b. "I will try to eat more beans and spinach over the next several days."
c. "I will call if I continue to have heavy bleeding, soaking a pad an hour."
d. "I will avoid sexual intercourse until the bleeding has completely stopped:'
e. "If I get dizzy or feel my heart beating funny, I will come back to the emergency room:'

Sean and Mason run out of gas while fishing from their boat In the bay. They set off an emergency flare with an Initial vertical velocity of 30 meters per second. The height of the flare In meters can be modeled by $h(t)=-5t^2+30t$, where t represents the number of seconds after launch.
Sean thinks the flare should reach at least 15 meters to bo seen from the shore. They want to know how long the flare will take to reach this height. a. Write an equation to determine how long It will take the flare to reach 15 meters. . b. Simplify the function so you can complete the square. c. Solve the equation by completing the square. d. Mason thinks that the flare will reach 15 meters in 5.4 seconds. Is he correct? Explain. e. Sean thinks the flare will reach 15 meters sooner, but then the flare will stay above 15 meters for about 5 seconds. Is he correct? Explain

C.B. is a single, self-supporting $58$-year-old man with Guillain-Barré syndrome (GBS). He came to see his family physician in early January with symptoms of fatigue, myalgia, fever, and chills, which were accompanied by a hacking cough. He was diagnosed with viral influenza. Three weeks later, he developed bilateral weakness, numbness, and tingling of his lower extremities, which rapidly progressed into his upper body. He was brought to the emergency department after his brother recognized the seriousness of his condition. Shortly after arrival, he became totally paralyzed and required endotracheal intubation and mechanical ventilation. He was then admitted to the neurology critical care unit, where he spent $1$ month. He underwent a tracheotomy before being transferred to a medical floor, where he spent several weeks. He was treated for pneumonia while hospitalized on the medical floor. His pneumonia resolved before a transfer to a skilled care facility $2$ days ago for further rehabilitation and continued ventilatory support for continued neuromuscular respiratory paralysis associated with the GBS.

How would C.B.'s nutritional needs be maintained?

Study of why EMS workers leave the job. An investigation into why emergency medical service (EMS) workers leave the profession was published in the Journal of Allied Health (Fall 2011). The researchers surveyed a sample of 244 former EMS workers, of which 127 were fully compensated while on the job, 45 were partially compensated, and 72 had noncompensated volunteer positions. The numbers of EMS workers who left because of retirement were 7 for fully compensated workers, 11 for partially compensated workers, and 10 for noncompensated volunteers. One of the 244 former EMS workers is selected at random. Find the probability that the former EMS worker was fully compensated while on the job and left due to retirement.

Under emergency conditions, the temperature in a nuclear containment vessel is expected to rise at the rate of $200 e^{t^{2}}$ degrees per hour, so that the temperature change in the first x hours will be $200 \int_{0}^{x} e^{t^{2}} d t$ degrees. Estimate the temperature rise as follows: a. Find the Taylor series at 0 for $e^{t^{2}}$. [Hint: Modify a known series.] b. Integrate this series from 0 to x and multiply by 200, obtaining a Taylor series for $200 \int_{0}^{x} e^{t^{2}} d t$. Estimate the temperature change in the first half hour by using the first three terms of the series found in part (b) evaluated at $x=\frac{1}{2}$.

The emergency physician orders a complete blood count, complete metabolic profile, urinalysis, blood pH, and x-rays. The physician suspects dehydration and metabolic alkalosis secondary to hypertrophic pyloric stenosis. Which of these laboratory findings would you expect with metabolic alkalosis?
a. Na: 128mEq/L, K: 2.6mEq/L, Cl: 90mEq/L, $H_CO3$: 28mEq/L
b. Na: 130mEq/L, K: 5.7mEq/L, Cl: 94mEq/L, $H_CO3$: 22mEq/L
c. Na: 130mEq/L, K: 3.9mEq/L, Cl: 98mEq/L, $H_CO3$: 17mEq/L
d. Na: 148mEq/LK: 4.lmEq/L, Cl: 108mEq/L, $H_CO3$: 13mEq/L.