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Impulse and Momentum Quiz

Impulse and Momentum Quiz. I’m studying for my Physics class and need an explanation.

Please write down your answers (with calculation) on a paper (P64) with your name, and submit this quiz in the lab, or upload a pdf file or picture file.
Quiz: Suppose a car experienced a head-on collision in Cartoon world. (in the calculation, round to nearest integer) (Write the solutions, don’t just write your answer. If your equations are right but final results are wrong you can get half points.)
1. Before the collision, the mass of the car is 1500kg, and the speed is 36km/hr, and the car is going to the north. What is its momentum? Is its momentum a vector? If it is a vector, indicate it’s direction and magnitude. (We can define the north as the positive direction in the following calculation)
2. There is a truck heading south, but the driver falls into sleeping and hit the car head to head. The mass of the truck is 1500 kg, and the speed is 3.6km/hr. What is the truck’s momentum?
3. However, the collision still happened at last. But a miracle happened, no people or vehicle got hurt or damaged, and no energy loss in the collision, they just change their velocity. After the collision, the car has a motion to the south with speed as 3.6km/hr. What is the change of the car’s momentum during the collision? (be careful of the direction )
4. If we can average the force which applied to the car in the collision, what is the impulse of the force?
5. We assume the collision time is 0.1s, and we can average the force, what is the average force? (be careful of the unit)
6. Actually, the force hit the car should be a changing force, let us assume the left graph in the figure on Page is its force-time graph, which equation can I use to find the impulse of the force? (Just write down the equation)
7. Read Page 61-62, and draw the prediction (step 6) on the paper.
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Impulse and Momentum Quiz

Respond to the following in 100 or so words. I’m studying for my Nursing class and don’t understand how to answer this. Can you help me study?

Discussion that I have to respond to and have at least one citation. Please send me after not more than 3 hours do not exceed 150 words
Part One
I believe for this post we were supposed to identify our independent and dependent variable. The PICO question is made up of both the independent and dependent variable however, I think Dr. Elder wanted us to clearly explain the variables of our study to ensure we are on the right track for our proposal. The independent variable is the cause and corresponds to the “I” in the PICO question (Polit & Beck, 2017). I believe that your independent variable would be the two trained clinical officers who are assigned patients in the nursing home. I think you need to elaborate a little more on this intervention. How is having two clinical trained officers at a nursing home going to have an effect in reducing nosocomial infections? Are nursing homes currently required to have trained clinical staff? As Dr. Elder explained the independent variable should be a nursing intervention. Dependent variable is the outcome or the “O” of the PICO (Polit & Beck, 2017). I don’t think your dependent variable could be “a change in proposal to show some change in strategies”. A more objective dependent variable for your proposal may be a decrease of nosocomial infections.
References
Polit, D. & Beck, C. T. (2017) Nursing research: Generating and assessing evidence for nursing practice. 10th ed. Philadelphia, PA: Wolters Kluwer.
Part 2
References
Polit, D. & Beck, C. T. (2017) Nursing research: Generating and assessing evidence for nursing practice. 10th ed. Philadelphia, PA: Wolters Kluwer.
Respond to the following in 100 or so words

CHST 301 University of California Irvine The War of 1812 United State History Essay.

Some tips for paper improvement:Go over your Paper 1 and see what can be improved. Study the essay requirements and how to implement them into your writingRESEARCH. Find AND READ sources so you can create that stockpile of 8-10 sources. Doing this before you even start your outline is highly recommended. I did it before and I’ve received 55/100 and that was so bad, I will attach the paper I did so you have a background of how my paper was and how should the new paper talk about. PLEASE MAKE SURE YOU INCLUDE ALL THE REFERENCES. Any plaigrisem will make me fail the class.
CHST 301 University of California Irvine The War of 1812 United State History Essay

Perpetual Motion And Movement Engineering Essay

The term perpetual motion exactly refers to the movement that goes forever. However the term usually refers to any device that Always produces more energy than it consumes that ultimately results in a net output of energy for indefinite time. The law of conservation of energy states that energy cannot be created or destroyed, according to this law there could not be any such kind of machine in existence. The most commonly contemplated type of perpetual motion machine is a mechanical system which sustains motion indefinitely, regardless of losing energy to friction and air resistance. A second type of impossible “perpetual motion machine” is one which does not violate conservation of energy, but produces work by spontaneously extracting heat from its surroundings, thereby cooling them down, and converting the heat energy into mechanical work. Such machines are prohibited by the second law of thermodynamics. BASIC PRINCIPLE OF PERPETUAL MOTION MACHINE The perpetual motion machine violates both first law of thermodynamics and second law of thermodynamics. The first law of thermodynamics is essentially a statement of conservation of energy while the second law has so many different kinds of definitions, and can be described in many ways. The most common definition of second law is “heat always flows from hot body to colder body”. “No heat engine can be more efficient than a Carnot heat engine” Machines which are claimed not to violate either of the two laws of thermodynamics but rather to generate energy from unconventional sources are sometimes referred to as perpetual motion machines. By way of example, it is possible to design a clock or other low-power machine, such as Cox’s timepiece, which runs on the differences in barometric pressure or temperature between night and day. Such a machine has a source of energy, albeit one from which it is impractical to produce power in quantity. CLASSIFICATION OF PERPETUAL MOTION MACHINE PERPETUAL MOTION MACHINE OF FIRST ORDER PERPETUAL MOTION MACHINE OF SECOND ORDER PERPETUAL MOTION MACHINE OF THIRD ORDER PERPETUAL MOTION MACHINE OF SECOND ORDER Impossible machines. Our second kind is of machines that challenge logic; like the drawings of Maurice Escher, where water runs perpetually downhill, but in a closed cycle. In fact, Escher did make one drawing of a waterwheel run perpetually in such a flow (See Figure ). Another impossible machine has weights of magnitude “9” on one side which become of weight “6” on the other when the weights turn upside-down It is a machine which spontaneously converts thermal energy into mechanical work. When the thermal energy is equivalent to the work done, this does not violate the law of conservation of energy. However it does violate the more subtle second law of thermodynamics. This type of machine is different from real heat engines (such as car engines), which always involve a transfer of heat from a hotter reservoir to a colder one, the latter being warmed up in the process. In a perpetual motion machine of the second kind there is only one heat reservoir involved, which is being spontaneously cooled without involving a transfer of heat to a cooler reservoir. This conversion of heat into useful work, without any side effect, is not possible, according to the second law of thermodynamics. In relevance, for example, an automobile engine is not a perpetual motion machine because it works on the basis of the temperature difference between the fuel burning in the cylinder and the cooler environment outside. In order so that it functions, some of the chemical energy released as heat when the fuel burns must not be converted to work, but must be exhausted to the cooler reservoir of the environment by the exhaust gas and the radiator. As explained by statistical mechanics, there are far more states in which heat distribution is close to thermodynamic equilibrium than states in which heat is concentrated in small regions, so temperatures will tend to even out over time, reducing the amount of free energy available for conversion to mechanical energy. Why is Perpetual Motion considered to be Impossible? The idea of perpetual motion sounds so clear-cut. An electric car powered by perpetual motion could recharge its own batteries forever, or a perpetual motion clock could without human intervention rewind itself for years. But there is a reason why perpetual motion machines remain in the area of dream; it’s the Laws of Thermodynamics. Some inventions may appear to run by perpetual motion, but they usually rely on a hidden source of external energy. Both the First and Second Laws of Thermodynamics keep our perpetual motion car in the garage. According to one portion of the First Law, energy cannot be created or destroyed, only changed to different forms. The batteries which power an electric car only contain a fixed amount of energy. Most of this energy goes into propelling the electric motor, but some is inevitably lost through friction and the recreation of momentum after a stop. Our perpetual motion car’s recharger would have to create even more energy in order to keep the batteries at full capacity. No such power generator exists, nor can one be built if the Laws of Thermodynamics are true. The Second Law of Thermodynamics also prevents perpetual motion machines from becoming reality. Part of the Second Law states that heat energy inevitably seeks out cold areas, eventually creating a neutral temperature state called entropy. This means our proposed perpetual motion car will eventually conk out from a lack of usable heat energy. The motor casing gets hot during work, and some of that heat energy would be dissipated into the air, not back into the battery system. Since external factors such as gravity and friction would be constantly pulling on the machine, eventually all of the usable energy would be lost. Perpetual motion machines would only be possible if a substance could be found that generated more energy than it used. Some inventors hoped that radioactive materials would prove to be useful as perpetual motion engines, but their energy is still considered finite. Magnets have also been used to power would-be perpetual motion machines, but their continued operation often requires some external energy source. Gravity is usually considered a force hostile to the cause of perpetual motion, but some inventors use gravity to their advantage when creating theoretical perpetual motion machines. Because scientific laws and theories generally deem perpetual motion impossible, patent offices are extremely reluctant to grant patents for such machines. Proposed perpetual motion machines are the only devices which require a working model at the time of patent application. To date, no inventor has successfully submitted a working model of a true perpetual motion machine MACHINES THAT WORKS ON PERPETUAL MOTION Motionless Electromagnetic Generator, a device that supposedly taps vacuum energy. Perepiteia, a device that claims to utilize back EMF. Stanley Meyer’s water fuel cell Motionless Electromagnetic Generator An electromagnetic generator without moving parts includes a permanent magnet and a magnetic Core including first and second magnetic paths. A first input coil and a first output coil extend around Portions of the first magnetic path, while a second input coil and a second output coil extend around Portions of the second magnetic path. The input coils are alternatively pulsed to provide induced Current pulses in the output coils. Driving electrical current through each of the input coils reduces a Level of flux from the permanent magnet within the magnet path around which the input coil extends. In an alternative embodiment of an electromagnetic generator, the magnetic core includes annular Spaced-apart plates, with posts and permanent magnets extending in an alternating fashion between the plates. An output coil extends around each of these posts. Input coils extending around portions of the plates are pulsed to cause the induction of current within the output coils. WATER FUEL CELL The water fuel cell is a purported perpetual motion machine invented by American Stanley Allen Meyer (August 24, 1940 – March 21, 1998). He claimed that an automobile retrofitted with the device could use water as fuel as a substitute of gasoline. The fuel cell supposedly split water into its component elements, hydrogen and oxygen. The hydrogen was then burned to generate energy, a process that reconstituted the water molecules. According to Meyer, the device required less energy to perform electrolysis than the minimum energy requirement predicted or measured by conventional science. If the device worked as specified, it would violate both the first and second laws of thermodynamics, allowing operation as a perpetual motion machine. Meyer’s claims about his “Water Fuel Cell” and the car that it powered were found to be fraudulent by an Ohio court in 1996. Throughout his patents and marketing material, Meyer uses the terms “fuel cell” or “water fuel cell” to refer to the portion of his device in which electricity is passed through water to produce hydrogen and oxygen. Meyer’s use of the term in this sense is different towards its usual meaning in science and engineering, in which such cells are typically called “electrolytic cells”. Furthermore, the term fuel cell is generally reserved for cells which produce electricity from a chemical redox reaction, whereas Meyer’s fuel cell consumed electricity, as shown in his patents and in the circuit pictured on the left. Meyer describes in a 1990 patent the use of a “water fuel cell assembly'” and portrays some images of his “fuel cell water capacitor”. According to the patent, in this case “… the term ‘fuel cell’ refers to a single unit of the invention comprising a water capacitor cell … that produces the fuel gas in accordance with the method of the invention. REFRENCES US Patent # 6, 362, 718, Motionless Electromagnetic Generator Patrick, et al. (March 26, 2002)

Northwestern State Benefits of Using Tomosynthesis in Mammography Paper

java assignment help Northwestern State Benefits of Using Tomosynthesis in Mammography Paper.

Students will develop a research paper based on a current trend healthcare, radiologic sciences,
education or administration. This topic must be approved by faculty.
Your paper is expected to be written in a formal style using correct APA format, grammar, and
spelling. Papers should be a minimum of 10 pages (not including the title page, abstract and references),
but should not exceed 20.
A minimum of 10 peer reviewed references should be used. Students will use Turnitin to
determine if any plagiarism exists in the paper. Turnitin is web-based plagiarism detection software that
compares the submitted paper with current and archived web pages, millions of student papers
worldwide, and collections of newspapers, magazines, scholarly journals, e-Books and e-Texts. Turnitin
will generate a similarity report for review. Click on the generated percent to view report. Once the
document viewer opens, click on “exclude quoted” and “exclude bibliography” to narrow the matches of
the paper and display a true percent of original writing in the paper. You will revise your paper based on
the similarity report. A paper will not be accepted above a 15% similarity report. You may submit their
paper multiple times to Turnitin until your paper is below 15%. The final copy after revising any
unintended plagiarism is to be submitted for grading.
Your paper should include the following components:
Title page (See APA manual.)
Abstract
Introduction-The APA manual has good information on what to include in the introduction.
Methods-In this section, you should describe how you searched for your articles. You should include
what databases you searched, what search terms you used, whether you had to expand or narrow your
search, and how you chose what articles to include.
Discussion-This should be the largest portion of your paper. It should be a synthesis and analysis of your
sources. It should not merely be a description of what was included in each article.
Conclusion-This section should be a summary of your paper. Depending on your topic you might also
include recommendations for practice, recommendations for future research, and/or implications for
practice.
*Note: The introduction, methods, discussion, and conclusion sections should be a minimum of 10
pages.
References-see APA for details regarding formatting. You will have a minimum of 10 peer reviewed
sources.