THE FOUR C'S

Please download "book shelf" and access the e-book as it is necessary to answer the discussions question. Also there needs to be quote and cite from it. After downloading the bookshelf, you can access the book by using the login information below. ID: [email protected] PW: Joyfulday1212! https://support.vitalsource.com/hc/en-us/articles/201344733 Finkelman, A. (2012). Leadership and management for nurses: Core competencies for quality care (2nd ed.). Boston, MA: Pearson. • Chapter 11: Developing Interprofessional and Intraprofessional Teams • Chapter 12: Improving Teamwork: Collaboration, Coordination, and Conflict Resolution • Chapter 13: Effective Staff Communication and Working Relationships The Four C’s for Leaders (wk 5) At times the needs of our families conflict with our work responsibilities. Could this possible be the underlying issue here? Explain the communication skills displayed in the scenario. On a scale of 1-10, how would you rate those of the leader? How might the communication skills have been improved? Please read the transcript to learn more about the issue. Visual Transcript Two nurses are sitting in the conference room. One is a home care leader dressed in business attire, and the other is a staff nurse dressed in sweater and slacks, the outfit appropriate for a home health nurse. Staff Nurse: Thank you for agreeing to talk to me about the discussion we had the other day about assigning patient load. As I started to say in the meeting, but got interrupted, is that I really don’t like the new plan that we have. I liked the old one better. I don’t understand why we need to change. Leader: You did get to express one concern about visiting patients in Iron Ridge and that is the community’s high crime rate. We all recognize this issue, and I do understand. But the new patient assignment scheme is meant to match you with patients who will most benefit from your specialty, and not where you live geographically. There are many patients in Iron Ridge who have diabetes that need your expertise. Staff Nurse: Well… I really do love my patients and I don’t hold it against them that they live in a bad part of town. But frankly, I’m afraid! Every night when I watch the news, there issomebody that’s been involved in a shooting or a carjacking. I talked to my husband about it and he said that if you insist I go over there, he wants me to quit. It’s not safe! Leader: [audible pause] I have an idea I would like to explore with you. What if we sent an escort to accompany you on your visits? Would this help you feel safer in that neighborhood? Staff nurse: Sure, it would, but do you think that’s realistic? The last I heard, we didn’t have any money to give us nurses raises and bonuses. I mean, do we even have the budget for something like security? Leader: It’s realistic as long as I can justify the safety of our nurses. Let’s say the cost is not a barrier to this scheme. What do you think? Staff Nurse: [hesitation] Please let me think about it. I need to talk to my husband, too. I can’t decide right now, but you’ve given me something to consider. End Transcript Separately at the bottom of the page, Please make sure you Supports ideas and opinions with a personal experience. As for the personal experience, you can make up a story. This can be just a few sentences. However, it needs to be referenced by my text book with a quote "----" to back up the statement(s). Please do not make up the quote as the professor does look for this. This is a requirement for my grade Thank you Astronomy 310 Assignment 2 The following assignment covers Chapters Four to Five. Please answer the following questions and submit your work using the assignment link. Show all your work in a clear and concise fashion, and include each step you take to reach the answer. The way in which you obtain your answer is as important as the final answer, itself, and marks will be given for showing all the relevant steps. Please refer to the appendix in the textbook (pages 392–395) to obtain any needed planetary values, and to Table 2-2 on page 41 for any needed constants. Submit your answers to your tutor for grading and feedback using the assignment link. You may submit your assignment (a) typed as a word-processed document, or (b) hand-written and scanned as a PDF. If you opt to handwrite your assignment, be sure to write legibly. Always keep a backup copy of your assignment. Note: Assignments must be submitted as .doc, .docx, or .pdf files. Each question has its point value marked in bold, for a total of 65 marks on this assignment. 1. [6 marks total] Problem 18 in Chapter Four of the text (page 97): Two optically thick infrared stars are at the same distance. Star A has peak radiation at 2.0 µm [2.0 micro meters], and B at 4.0 µm. Star A is 16 times as bright as B. What physical conclusions can you draw about these stars if they both radiate as blackbodies? Note: If a material is optically thick, very little light will pass through because the material is opaque. [See pages 323 to 325.] All blackbodies are optically thick. 2. [5 marks total] One statement of the virial theorem is as follows: For a gravitational bound system in equilibrium, twice the kinetic energy will equal the absolute value of the potential energy. Show that this is true for a planet in a stable orbit about a star. 3. [13 marks total] (a) [9] A typical diffuse cloud of atomic hydrogen has a temperature of 50K, and approximately 5×108 hydrogen atoms per cubic meter. Assuming the cloud is completely composed of hydrogen, calculate the minimum mass (in solar masses) necessary to cause the cloud to spontaneously collapse. This is called the Jeans mass. Compare this to the estimated mass of diffuse hydrogen clouds of 1 to 100 solar masses. Are diffuse hydrogen clouds stable against collapse? (b) [4] Repeat the calculation of the Jeans mass for the dense core of a giant molecular cloud. Typical dense cores have approximately 1014 hydrogen atoms per cubic meter and temperatures of 150K. Again, assume the cloud is entirely composed of hydrogen atoms. Compare this to the range in masses for these objects of 10 to 1000 solar masses. Are these objects stable against collapse? 1 4. [8 marks total] (a) [5] For an object starting from rest, falling with a uniform acceleration a, the distance travelled d, in a time t, is given by d = 1 2 a t2 . Consider a cloud of radius R that starts to collapse. Using the expression above, show that the time for a point on the surface to travel a distance R is given by r 3 2pG?, where ? is the density of the cloud and G is the universal gravitational constant. You may assume the acceleration is constant. (b) [3] What you have derived is called the free-fall time. It is the time it takes for the cloud to collapse to a single point, assuming there are no outward forces. Interestingly, this expression does not depend on the size of the cloud. A cloud with a larger radius will also have more mass, which leads to a larger acceleration. Calculate the free-fall time for the dense core of a giant molecular cloud, and express your answer in years. As in question 3(b), assume the core of a giant molecular cloud has 1014 hydrogen atoms per cubic meter. 5. [6 marks total] Problem 22 in Chapter Four of the text (page 97): The condensation in Problem 21 [a condensation of gas and dust with Jupiter’s mass] is acted on by the central star, which has 1 MJ and is 5.2 AU away. Estimate the density that the condensation must have to keep it from being torn apart by tidal forces from the Sun. (Hint: the condensation would have to be outside Roche’s limit). It may be helpful to look at the solution for Problem 21, which has been worked out in the Study Guide. 6. [7 marks total] Uranium 238 decays into lead with a half-life of approximately 4.5 billion years. The equation for the number of lead atoms after a given time t is given by N(t) = N0 e -kt , where N(t) is the number of Uranium atoms at time t, N0 is the original number of Uranium atoms, and k is the time constant. See the Additional Notes from Unit 2, Section 5 for further discussion of the equation. (a) [3] Determine the time constant for Uranium turning into lead. (b) [3] A rock from the lunar highlands contains 55% of its original amount of Uranium 238, with the remaining 45% having decayed into lead. How old is the rock? (c) [1] A rock from the lunar maria contains 60% of its original Uranium 238 (with the remaining 40% having decayed into lead). Is this rock younger or older than the rock from part (b)? 7. [6 marks total] Problem 7 in Chapter Five of the text (page 125): (a) [3] You are traveling through space and come to a star of normal solarlike composition but with planets composed of refractory silicate minerals rich in aluminum, titanium, and calcium, and containing no water or ice. What can you conclude about the formation conditions? (b) [3] Compare these planets with our own Moon and comment on the formation conditions of the Moon. 8. [7 marks total] (a) [4] Show that the Safronov “rule of thumb” is exact for a planetary body with a density of 1790 kg/m3 . Another way to state this is to show that vesc = 1 × 10-3 R for a planetesimal with this density, where vesc is the escape velocity in m/s, and R is the radius of the planet in m. (b) [3] What is the escape velocity of a 1000-km-diameter planetesimal if its density is 3000 kg/m3 ? 2 9. [7 marks total] If a planetesimal with velocity v is sweeping through a nebular cloud of smaller planetesimals of fixed size, it can be shown that the time t to grow to a radius R is given by t = 4R v ?p ?n , where ?n is the density of the nebular cloud and ?p is the density of the planetesimal, itself. [See Problems 14 and 15 on page 125.] (a) [4] If the density of the nebular cloud is 10-7 kg/m3 , estimate the timescale to accrete a body 1000 km across in the solar nebula at a distance of 1 AU from the centre of the nebula. Assume a reasonable ?p. (b) [3] If the accretion process is only 1 % efficient (only 1 in 100 collisions results in a mass gain), estimate the new timescale. 3