Physics  Directions:  It is important that you provide answers in your own words.  Please focus only on information from the text/eBook to create your own solutions.  Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy.  All answers will be checked for plagiarism.  Instances of plagiarism can result in probation or possible dismissal from the school. Grading:  Please be sure to follow all guidelines (number of sentences/showing all calculations) and to provide the correct metric units of measure.  All questions are 3.33 points.  You MUST include units on all your answers. For any math based questions you must show all your work and explain any numbers that are not clearly understood by the problem.  There is a formula sheet for you to use at the end of the exam.  1.  How is electric potential energy similar to gravitational potential energy?  How is it different?  Where will an electron bound in an atom and have the largest electrical potential energy? 2.  What is a transformer?  Explain how a transformer works including specific details on step up and step down transformers. 3.  Write at least 4 to 5 sentences on the different measurements that helped to calculate the speed of light.  There are 3 specific experiments mentioned in your textbook. 4.  5.  What caused magnetic fields?  What happens If you keep breaking a magnet in two until you reach a single atom? 6.  What is an electric motor?  Explain its operation. 7.  State Hooke’s law.  A spring will stretch 12 cm when a 250-g mass is hung on it.  If the 250-g mass is hung on two identical springs, hung sided by side, and both support the 250-g mass, how much will each spring stretch.  EXPLAIN. 8.  Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.  Please provide at least 2 examples. 9.  Why do atoms have relatively the same size even though they may have widely different masses? 10.  What is the period of a soundwave whose wavelength is 20.0 m?  Use values from the book and show ALL of your work. 11.  A 60-V potential different is applied across a parallel combination of a 10-ohm and 20-ohm resistor.  What is the current in the 10-ohm resistor?  Show your work. 12.  What is the power dissipated by a toaster that has a resistance of 60 ohms and is plugged into a 120-V outlet? Show your work. 13.  A step up transformer has 250 turns on its primary and 500 turns on it secondary.  When the primary is connected to a 200 V and the secondary is connected to a floodlight that draws 5A, what is the power output?  Please show ALL of your work. 14.  What is the mass of air in a room that has dimensions of 10m x 20m x 4 m?  Use values from the book to show your work. 15.  About how much pressure do the feet of a 6000-kg elephant exert on the ground?  Assume each foot has an area of 0.10 square meter.  Please show all your work. 16.  The temperature of an object is raised by 90oC. This is equivalent to what increase in its absolute temperature? 17.  A supersonic aircraft produces a shock wave that describes a 30o angle. What happens to the angle of the cone as the aircraft travels faster? 18.  A 2.0-ohm resistor is connected in a series with a 20.0 -V battery and a three-branch parallel network with branches whose resistance are 8.0 ohms each.  Ignoring the battery’s internal resistance, what is the current in the batter?  Show your work. 19.  Gas A is composed of diatomic molecules (two atoms to a molecule) of a pure element.  Gas B is composed of monoatomic molecules (one atom to a molecule) of another pure element.  Gas A has three times the mass of an equal volume of gas B at the same temperature and pressure.  How do the atomic masses of elements A and B compare? 20.  Consider a model steel bridge that is 1/100 the exact scale of the real bridge that is to be built.  a.  If the model bridge weighs 50 N, what will the real bridge weigh? b.  If the model bridge does not appear to sag under its own weight, is this evidence the real bridge, built exactly to scale, will not appear to sag either? 21.  Calculate the water pressure in the pipes at the bottom of a high-rise building that is fed by reservoir 60 m above the roof top. 22.  The atmosphere does not ordinarily crush cans. However, it will crush a can after it has been heated, capped, and cooled.  Explain why this happens.  Be sure to use complete sentences 23.  When a 57-gram piece of aluminum at 100oC is placed in water, it loses 735 calories of heat while cooling to 30oC.  Calculate the specific health capacity of the aluminum. 24.  Your classmate says that if all the molecules in a particular liquid had the same speed, and some were able to evaporate, the remaining liquid would not undergo cooling.  Do you agree or disagree and what is your explanation to support your answer. 25.  Would it be correct to say the Doppler Effect is the apparent change in the speed of a wave due to the motion of the source? Be sure to fully explain your position using at least 3 complete content related sentences. 26.  The equation E=hf describes the energy of each photon in a beam of light.  If Planck’s constant, h, were larger, would photons of light of the same frequency be more energetic or less energetic.  Be sure to explain using at least 3 content related sentences. 27.  A radioisotope is place near a radiation detector, which registers 80 counts per second.  Eight hours later, the detector registers five counts per section.  What is the isotope’s half-life? 28.  Write the nuclear equation that describes the following process. Uranium-235 undergoes an alpha decay to produce thorium-231.   29.  If the uranium nucleus were split into three pieces of approximately the same size instead of two, would more energy or less energy be released? Defend your answer in terms of Figure 40.14 in your textbook. 30.  According to chapter 30 in the course textbook, describe the time it would take for Earth to orbit the collapsed sun if the sun collapsed into a black hole. Formula Sheet (this is not finished yet) Density: d=m/V Pressure: P = F/A Liquid Pressure: P = dgh C=Q/mΔ T P=IV

Module 4: Critical Thinking          I have attached my submitted Portfolio Assignment below for your reference. Required Chapters 7-9, 11 &  14 in Key Concepts in Public Health Kouzes, J., &  Posner, B. (2015). The five practices of exemplary leadership model. Retrieved  from http://www.leadershipchallenge.com/about-section-our-approach.aspx Recommended Otto, J., Holodniy,  M., & DeFraites, R. F. (2014). Public health practice is not research. American Journal of  Public Health, 104(4), 596-602.  doi:10.2105/AJPH.2013.301663 Pobric, A., &  Robinson, G. (2015). Population ageing and low fertility: Recent demographic  changes in Bosnia and Herzegovina. Journal of Population Research, 32(1), 23-43.  doi:10.1007/s12546-014-9141-5 Critical Thinking Assignment (60 Points) Important! Read First Choose one of the following two assignments to complete this week. Do  not do both assignments. Identify your assignment choice in the title  of your submission. Option #1: Finding Partners  Most community action plans can benefit from recruiting  partners—individuals or organizations that might help with the solution  to the public health issue. These partners may have money, special tools  or skills, and other resources. Create a list of at least ten local partners/stakeholders who might  be willing to help you implement or develop your own community action  plan. Remember, a stakeholder is a person with an interest or concern in  something. For each potential partner, include: the potential partner’s name, comprehensive contact information (job title, address, phone, website, and any assistants’ names), a short explanation of why you think the partner or stakeholder would be useful to your project, and why you think that particular partner might be interested in joining  your effort—that is, what is the benefit to the partner in doing so? Your partners could come from the following (don’t be limited by this list): Government officials (state, regional, local, or federal) Local health/public health department agent(s) Non-profits or non-governmental organizations (NGOs). Think broadly.  For example, consider national and local organizations (e.g., men and  women’s organizations, schools, government-funded services, and  volunteer organizations). Businesses often help fund or implement community projects. Colleges or universities may have grants, special departments, or clubs/organizations. Churches or faith-based organizations Instructions: Write a well-organized list that is a 2-3-page paper, not including the title and reference pages, which are required. Option #2: Interview a Potential Partner  Most community action plans can benefit from recruiting  partners—individuals or organizations that might help with the solution  to the public health issue. These partners may have money, special tools  or skills, and other resources. For this option, select one person/stakeholder in your community who  might have interest or expertise in your community action plan.  Remember, a stakeholder is a person with an interest or concern in  something. This stakeholder should have a connection to your portfolio  topic in your chosen community as this may help you determine who you  can interview. Plan a brief interview with this person to run your ideas  for an action plan to implement in your community by him or her as you  continue drafting your plan. Do not use this interview to verify that  this person thinks the issue exists in your community. The existence of  the issue should already be evident from your previous research. Your interviewee could come from the following (don’t be limited by this list): Government officials (state, regional, local, or federal) Local health/public health department agent(s) Non-profits or non-governmental organizations (NGOs). Think broadly.  For example, consider national and local organizations (e.g., men and  women’s organizations, schools, government-funded services, and  volunteer organizations).  Businesses often help fund or implement community projects. Colleges or universities may have grants, special departments, or clubs/organizations. Churches or faith-based organizations Instructions Before your interview, list 10 questions about the plan you are  developing to tackle an issue in your community. These should be  questions that you want to ask the person you have selected to  interview. Take notes during the interview, in preparation for writing a summary of your conversation. After the interview, write a 2- to 3-page summary of the interview,  not including the title and reference pages, which are required. List each question you asked, as well as a short, one-paragraph summary of the response you got to each question.

he time between successive minima is ______.Find the rotation period of the asteroid by multiplying the time between successive minima by two. Remember, the entire light curve consists of two maxima and two minima.Period (in days)______A more accurate period is the new delta divided by the number of complete rotations (NOT the number of minima). More accurate period (in days) ______.Either import a picture of your sketch into the answer box or submit the sketch of figure 1 by iCollege email (scanned or photographed image).If your asteroid's axis of rotation were perpendicular to its orbital plane and if you were standing on its equator, approximately how long would it be between sunrise and sunset?Assuming the variation is due only to the changing aspect of the asteroid's shape, how many times brighter is the asteroid when viewing the long side as opposed to when viewing the short side? To measure the asteroid's brightness use the horizontal line in the light curve. Just drag and drop it on any of the maxima or minima you wish to measure and read the "Intensity" displayed at the right of the graph......................