SHAMINMENISHA How Water Rockets Work A water rocket works using the same principles as other rockets. There are three main forces in action: thrust (Fapp)‚ drag (Ffr) and weight (w=mg). The water‚ which is forced out by the difference between internal and atmospheric pressure‚ is a reaction mass that provides the thrust. All rockets have a reaction mass‚ which can vary from hot gasses that are expelled when a fuel is burnt (in the Space Shuttle’s SRB’s for example) to water in a water rocket. The air molecules
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Introduction A water bottle rocket is essentially that; a bottle modified in the image of a rocket then filled with a select amount of water that is pressurised and launched into the air due to the forces pushing the rocket upwards from the launcher. When the completed water bottle rocket is sitting on the launcher‚ the force of the surface of the launcher pushes the rocket up whilst gravity drags it down. As the fluid inside the rocket is pressurized‚ the forces become unbalanced
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Before baseline 11-10 launches‚ the distance rocket traveled 6.73m and weighed 1.12 grams and the seconds rocket went .92 seconds and weighed .95 grams. By adding some cardstock for fins and taking off my clay and replacing it with tape it went quite a bit further and it went quite a bit faster‚ the weight was .93 grams. With the weight taken off‚ the rocket went 1.796 m farther. For the baseline launches‚ the distance average was 7.465m and .91 seconds and for the height the average was 2
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Charter schools are publicly funded school started by individuals who seek a difference in education than traditional public schools. Urban education has its advantages and disadvantages overall‚ but charter schools disadvantages are going to be my main focus. Student demographic can play a huge part in the downfall of charter schools because it is less diverse. Based on student demographics‚ the quality of teaching is also a negative impact especially on the students learning experience. Funding
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INTRODUCTION The Ottawa Charter for Health Promotion 1986 was established to provide a foundation for implementation of health promotion in health care. The Ottawa Charter for Health Promotion is the focus of this essay and the purpose is to demonstrate a clear understanding of the importance of health promotion‚ health literacy‚ health education and how they relate to empowerment and the role of health professionals. To aid with this‚ this essay will refer to the health promotion concept of a community
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Ariane 5 Rocket Disaster On the 4th of June 1996‚ around 40 seconds after initiation of the flight sequence‚ the maiden flight of the Ariane 5 Launcher ended in failure. An independent Inquiry Board was nominated to determine the cause of the launcher failure‚ and found that the inertial reference system (IRS) was the cause of this incident; a system error propagating through the control‚ commanding large corrections in altitude leading to the destruction of the vehicle. During the development of
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Successful Goal Setting?‚ 2011). Some of my values are to have a good job‚ be financially stable and to provide a good home for my family. Once I figured out what was important to me‚ I had to figure out how to go after my goals. I created a SMART system to make my goals Specific‚ Measureable‚ Attainable‚ Relevant‚ and within a specified time frame (Carter‚ Bishop‚ & Kravits‚ Chapter 4‚ Set up a Goal-Achievement Plan‚ 2011). My long-term professional goal is to graduate with my BSN and my short-term
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Charter Company 1. Calculate the following ratios for each year during the period 1980-1983. Comment on the trend indicated by each ratio with respect to the financial performance and condition of the Charter Company. A) Profitability: ROTA = EBIT/total assets 1980 = 145485/[(1728694+1746260)/2]= 8.37% 1981 = 155673/[(1541326+1746260/2] = 6.45% 1982 = 108180/[(1628046+1541326)/2] =6.83% 1983 = 133896/[(1813199+1628046)/2]=7.78% B) Turnover: Accounts Receivables turnover ratio = Net
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tangible benefits of project management is budgetary savings. Project managers control budgets and make decisions about how best to allocate resources in the process of working toward a project’s objectives. In the end‚ the difference between coming in under budget or having an overrun is a function of workforce efficiency and project management. The money that project managers save their businesses increases the project’s return on investment and remains available for future projects. Managing Risk
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– The Charter Company Discussion Questions Answer these questions using the overview (p. 1) and 5 Exhibits (pp. 3 – 9). Write your responses in a new thread on the board. 1. Calculate the following ratios for each year during the period 1980-1983. Comment on the trend indicated by each ratio with respect to the financial performance and condition of the Charter Company. a. Profitability: Return on average total assets (assume a 46% income tax rate) ROTA=Sales/Total assests 1983=133896/1720622
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