physical science pennfoster mechanics

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Student ID: 21973473

Exam: 986051RR – Mechanics

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Questions 1 to 25: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer.

 

1. Oil flows upward in the wick of a lantern because of the liquid property called A. meniscusity.

B. capillarity.

C. viscosity.

D. density.

 

2. The metric unit of force is the A. gram.

B. kilogram.

C. newton.

D. nanometer.

 

3. A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car during the trip? A. 960 km/hour

B. 36 km/hour

C. 60 km/hour

D. 4 km/hour

 

4. Within the metric system all units are based on the number A. 1.

B. 1000.

C. 10.

D. 100.

 

5. A man standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down the man continues moving forward at the original speed. This is an example of the effect of A. gravity.

B. velocity.

C. weight.

D. inertia.

 

 

 

6. A steel block has a volume of 0.08 m³ and a density of 7,840 kg/m³. What is the force of gravity acting on the block (the weight) in water? A. 5,362.56 N

B. 6,700.56 N

C. 6,150.64 N

D. 7,600.18 N

 

7. An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon? A. 20 N

B. 12.24 N

C. 196 N

D. 1,176 N

 

8. A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 313.6 meters

B. 39.2 meters

C. 1,254.4 meters

D. 78.4 meters

 

9. A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? A. 97 percent

B. 92 percent

C. 96 percent

D. 94 percent

 

10. In which of the following units is acceleration expressed? A. Newtons

B. Meters per second squared

C. Kilograms

D. Foot-pounds

 

11. The main difference between speed and velocity involves A. gravity.

B. direction.

C. distance.

D. weight.

 

12. If an object has a mass of 20 kg, what is the force of gravity acting on it on earth? A. 32.67 N

B. 1.96 kg

 

 

C. 196 N

D. 2.04 kg

 

13. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car? A. 15,625 N

B. 20,250 N

C. 703 N

D. 625 N

 

14. How much time should be allowed for a 605-mile car trip if the car will be traveling at an average speed of 55 miles per hour? A. 11 hours

B. 10.5 hours

C. 8.75 hours

D. 9 hours

 

15. The acceleration of gravity is a constant equal to _______ meters per second squared. A. 10.2

B. 8.4

C. 9.8

D. 7.6

 

16. When an automotive battery is fully charged, the sulfuric acid and water mixture will have a specific gravity of about A. 2.5.

B. 1.0.

C. 1.3.

D. 0.15.

 

17. What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J

B. 12,000 J

C. 2,940 J

D. 5,880 J

 

18. A naturally occurring force related to two bodies in motion is _______ force. A. frictional

B. centripetal

C. centrifugal

D. gravitational

 

 

 

19. A tank with a flat bottom is filled with water to a height of 4 meters. What is the pressure at any point at the bottom of the tank? (You can ignore atmospheric pressure when calculating your answer.) A. 4.0 kPa

B. 18.9 kPa

C. 39.2 kPa

D. 9.8 kPa

 

20. An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 47.75 J

B. 764.4 J

C. 468 J

D. 4,586.4 J

 

21. What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s²? A. 120 N

B. 23 kg

C. 1.875 kg

D. 23 N

 

22. The orbits of planets being elliptical was one the planetary laws developed by A. Copernicus.

B. Ptolemy.

C. Brahe.

D. Kepler.

 

23. If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be A. lower than the mercury in the vessel, and shaped like the inside of a bowl.

B. higher than the mercury in the vessel, and shaped like the outside of an umbrella.

C. higher than the mercury in the vessel, and shaped like the inside of a bowl.

D. lower than the mercury in the vessel, and shaped like the outside of an umbrella.

 

24. In a practical machine, the power output is _______ the power input. A. larger than

B. multiplied by

C. equal to

D. smaller than

 

25. According to Ptolemy’s model of the movement of celestial bodies, A. the sun is the center of the universe.

B. the earth rotates around the moon.

C. the earth rotates around the sun.

D. planets orbit in circular paths around the earth.

 

 

End of exam

Discussion: Diagnosis and Management of Gastrointestinal Disorders

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          Discussion: Diagnosis and Management of Gastrointestinal Disorders

Gastrointestinal disorders are a significant cause of stress for pediatric patients and their families. Symptoms of these disorders range from mild to severe and may include complaints such as abdominal pain, cramping, constipation, nausea, bloating, and fatigue. Since multiple disorders can result in these same symptoms, it is important to carefully assess patients to develop differential diagnoses. Depending on the age of the patient, assessments can sometimes be difficult because younger children are not always able to clearly communicate their symptoms. Pediatric patient evaluations must involve a combination of patient input, parent input, and your own observations from physical exams and diagnostics. As you read the following three case studies, consider the source (i.e., patient, parent, or practitioner) of the provided patient information.

Case Study 1

Jordan is a 4-year-old with a 1-day history of vomiting and diarrhea. His mother reports he awoke this morning vomiting and his vomitus contained last night’s dinner. He vomited three more times this morning but has not vomited in 5 hours. Approximately one hour ago, he had a large diarrhea stool that did not contain blood or mucus. He has had small sips of sports drinks since this morning. His last urination occurred 3 hours ago and the volume was small and the color dark yellow. Physical examination reveals a quiet and tired child with normal exam except for increased bowel sounds, but no abdominal distension, pain with palpation, or masses.

Case Study 2

Victoria is a 15-year-old who complains of chronic sore throat and bad taste in her mouth. Her height and weight are appropriate for age and she remains on the same growth trajectory since infancy. Abdominal examination and chest examination are negative. History reveals frequent burping and occasional feelings of regurgitating food. Diet history reveals she eats a balanced diet, but her primary sources of fluids are coffee, tea, and carbonated drinks.

Case Study 3

Trish is a 7-year-old who presents with abdominal pain. Further questioning reveals frequent stool soiling and a history of chronic constipation since infancy. The child does not remember when her last bowel movement was, but her mother reports that she had an ”accident” at a family gathering last night where she defecated in her underwear prior to reaching the bathroom. Physical examination is benign except for the presence of palpable stool in the descending colon and an enlarged rectal vault with hard stool.

To prepare:

·        Review “Gastrointestinal Disorders” of the Burns et al. text.

·        Review and select one of the three provided case studies. Analyze the patient information.

·        Consider a differential diagnosis for the patient in the case study you selected. Think about the most likely diagnosis for the patient.

·        Think about a treatment and management plan for the patient. Be sure to consider appropriate dosages for any recommended pharmacologic and/or non-pharmacologic treatments.

Consider strategies for educating patients and families on the treatment and management of the gastrointestinal disorder

 

By Day 3

Post at least 250 words (no introduction or conclusion for discussion)

1.        Explain of the differential diagnosis for the patient in the case study you selected.

2.         Explain which is the most likely diagnosis for the patient and why.

3.       Include an explanation of unique characteristics of the disorder you identified as the primary diagnosis.

4.       Then, explain a treatment and management plan for the patient, including appropriate dosages for any recommended treatments.

5.       Finally, explain strategies for educating patients and families on the treatment and management of the gastrointestinal   disorder.

 

Mini ethnography

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Assignment Instructions

Assignment 2: Be An Anthropologist

Mini ethnography

Due:

11:55pm ET on Sunday of Week 5

Purpose:
The goal of this exercise is to observe a ‘cultural scene’ as an anthropologist would (i.e. based on everything you have learned in the course to-date). The student will analyze their observations in terms of themes from the subfield of cultural anthropology such as how it helps frame our societies (family, lifestyle, lineage, language and communication) and, in some ways, its evolution.

Description:
Culture as we have discussed in our readings is an incredible advantage that has allowed humans to enter almost every niche in nature. The development and maintenance of culture is what sets humans apart from other species. Culture varies by time and location. For this assignment, students will be observing a particular setting for 25 minutes, writing up your observations, and then analyzing them.  Listen to APUS anthropologist Donna Rosh give you some pointers for people-watching as an anthropologist (or read the script).

 

Directions for 4-6 page Assignment:

  1. Choose a time and location for where/when you are going to conduct your observations of an ethnographic scene (mall, public transportation, coffee shop, etc.).
  2. Go to the specified location and proceed with your observations.  Find a place to sit quietly and to simply watch what is going on.  Do not talk to or interview people during this time.
  3. Take notes (handwritten recommended).  Include details about the scene itself (time of day, lighting, furniture, plants, sounds, temperature, smell, vibe/energy, etc), details about the people around you (their characteristics, their behavior).
  4. When your 25 minutes are finished, leave the scene.  In a quiet place, fill out your notes.  At this time, you should start to think about concepts that you’ve learned in class that fit with your observations.  This step is critical.
  5. Write a 4-6 page reaction paper about your observations   Your paper should:
  • Define and discuss culture using our course materials
  • Include a ‘thick description’ of the location with clear detail of your observations
  • Analyze your observations, identifying four anthropological concepts that fit your observations.  Define the concept and analyze how it fits your observations.
  • Include your field notes at the end

What is an anthropological concept? Anthropological conceptsare anthropological terms and ideas.  Examples of some that we’ve studied include: ethnocentrism, ethnicity, reciprocity, kinship, language and communication. You should not use this exact list of four concepts and expect them to fit your observation scene. You may, of course, use others – depending on what concepts are relevant to your observation.  Lists of additional key concepts can be found in Lessons, in the Lesson Overview section.  We also have two examples to share with you from APUS anthropologists- one from Jennifer Cramer’s fieldwork in The Gambiaand one from James Turner’s fieldwork in Mexico.

One common misstep is to apply the four subfields of anthropology or to apply the four parts of the definition of culture.

  • Conclude with a discussion of and reflection on your experience of the situation. For example you might write how you felt when you started to detect a pattern in characteristics and/or behavior.

 

Disclaimer

Originality of attachments will be verified by Turnitin. Both you and your instructor will receive the results.

 

Writing Expectations

All written submissions should be submitted using APA formatting. In part, this includes:

 

  • Typewritten in double-spaced format with a readable style and font and submitted inside the electronic classroom.
  • Arial 11 or 12-point font or Times New Roman styles.
  • Page margins Top, Bottom, Left Side and Right Side = 1 inch, with reasonable accommodation being made for special situations and online submission variances.
  • Save as .doc, .rtf, or .pdf
  • See our Basics of APA Style tutorial from Week 1 for coaching on APA formatting.  For additional resources, use your COLL100 materials, our Library, and the Purdue Online Writing Lab.

 

Task – Release the Kraken

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Task – Release the Kraken

Introduction

floating

Biological oceanography is one of the most intriguing fields of oceanography. Many animals and plants in the ocean remain to be discovered. Marine biologists are just beginning to comprehend the ocean ecology, or relationships of the organisms with the ocean. Much marine biological research is focusing on how marine animals and plants interact with each other and the environment. The often involves a detailed knowledge of water chemistry and sometimes physical oceanography and marine geology as well as an understanding of basic biological processes.

The Captain’s Orders

Read the log book Taxonomy to learn about ocean productivity and marine life classification. You will need external resources to help you answer some of the questions below. Make sure you make a note where you got your information. Answer the questions and complete the following tasks using the log book and your internet ready computer.

Objectives

  • Investigate the relationship between productivity, net productivity and respiration.
  • Classify marine organisms according to the modified Linnean system of classification.

Task Questions

THE BEGINNING

  1. How old is the Earth?
  2. When did the first organisms exist; how long ago?
  3. How are prokaryotes important to humans? What role do they play?

KINGDOMS

  1. What is the size of the smallest organism in the ocean? What is the name of that organism?
  2. What is the size of the largest organisms in the ocean? What is the name of that organism?

PRODUCTIVITY

  1. What types of organisms account for 90% to 96% of the ocean’s primary productivity?
  2. What are the limiting factors for marine productivity?
  3. Where/when in the oceans is productivity high at the surface? Why?
  4. Where/when in the ocean is productivity low at the surface? Why?

 

Quiz Questions

THE BEGINNING

  1. The first organisms to exist on planet Earth were:
    A. eukaryotes B. prokaryotes
  2. Organisms with a nucleus:
    A. eukaryotes B. prokaryotes
  3. Organisms with sexual reproduction:
    A. eukaryotes B. prokaryotes
  4. Organisms with the highest oxygen needs:
    A. eukaryotes B. prokaryotes

KINGDOMS

  1. Which kingdom are prokaryotes?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  2. Which kingdom(s) are Eukaryotes?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  3. Which kingdom(s) are single-celled autotrophs?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  4. Which kingdom(s) are multi-celled autotrophs?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  5. Which kingdom(s) are multi-celled heterotrophs?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  6. Which kingdom contains both multi- and single-celled organisms?
    A. Animals B. Bacteria C. Fungi D. Plants E. Protozoa
  7. Organisms that live in or on the sea bottom are:
    A. benthos  B. nekton C. plankton
  8. Organisms that swim freely from one location to another are:
    A. benthos B. nekton C. plankton
  9. Salmon are:
    A. benthos B. nekton C. plankton
  10. Oysters and mussels are:
    A. benthos B. nekton C. plankton
  11. Sea cucumber are:
    A. benthos B. nekton C. plankton
  12. Whales are:
    A. benthos B. nekton C. plankton
  13. Jellyfish are:
    A. benthos B. nekton C. plankton
  14. Diatoms, coccolithophores, radiolarian, foraminifera are:
    A. benthos B. nekton C. plankton

PRODUCTIVITY

  1. Which of the following choices is most evolved?
    A. Bacteria B. Brown algae  C. Animals D. Red algae  E. Protozoa F. Plants
  2. Which of the following choices best describes Kelp?
    A. Bacteria B. Brown algae C. Green algae D.Animals E. Protozoa F. Plants
  3. Which of the following choices best describes roots and covered seeds?
    A. Bacteria B.Animals C. Green algae D. Red algae E. Protozoa F. Plants
  4. Which of the following choices best describes single-celled organisms:
    A. Bacteria B. Brown algae C. Green algae D.Animals E. Protozoa F. Plants
  5. The amount of sugar or food produced by autotrophs living in an area minus the amount they use up daily to supply their own respiration needs:
    A. gross primary productivity B. net primary productivity C. super primary productivity D. secondary productivity