Measurement and Uncertainty When recording data‚ each entry should be given a corresponding estimated error‚ or uncertainty. The uncertainty gives the reader an idea of the precision and accuracy of your measurements. Use the following method for finding the uncertainty associated with any measuring device used in lab. First‚ find the least count‚ or the smallest printed increment‚ of the measuring device. On the meter sticks‚ the least count is 1 mm. On the double pan balances‚ the least count
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4140 Steel The first metal sample that will be discussed is 4140 steel. This sample was subject to multiple heat treatment processes that included quenching‚ normalizing‚ full annealing‚ and tempering. The micrographs of the heat treated samples can be seen below in Figure 2. Figure 2: 4140 Steel Micrographs 100X a) Baseline‚ prepared by Bryan Biggs b) Quenched‚ prepared by Cameron Palkowski c) Normalized‚ prepared by Michael Rodriguez d) Full Annealed‚ prepared by Avery Callahan e) Tempered
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A Guttman scale presents a number of items to which the person is requested to agree or not agree. This is typically done in a ’Yes/No’ dichotomous format. It is also possible to use a Likert scale‚ although this is less commonly used.Questions in a Guttman scale gradually increase in specificity. The intent of the scale is that the person will agree with all statements up to a point and then will stop agreeing.The scale may be used to determine how extreme a view is‚ with successive statements showing
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Mechanical Testing: Impact and Hardness Testing ME-3701-02 3rd March 2009 Ke Chen Abstract This experiment‚ as may be derived from the title‚ involves testing multiple metallic specimens to determine their toughness‚ strength and hardness. The three tests used to determine these characteristics are called the Charpy Impact test‚ tensile strength test and Rockwell Hardness test. As stated by www.key-to-steel.com {1}‚ “Charpy impact test method for metallic materials is specified by European
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X= attitude towards the city Y= duration of residence in that city H0 = rXY=0 i.e there is NO relationship between the 2 continuous variables X and Y Ha ≠0‚ there is a relationship between the 2 continuous variables X and Y Analyze -> correlate -> bivariate The SPSS output indicates that rXY has a value of .936. Clearly this value of rxy seems different from zero. However the question that arises is whether this value of rxy is statistically different from zero at 95% level of confidence
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forest of the night‚ What immortal hand or eye Could frame thy fearful symmetry? Genres of Poetry *Narrative Poetry- a narrative poem is one that tells a story.Types of narrative poetry include ballads and epics. *Lyric Poetry- a highly musical verse that expresses the emotions of the speaker. Common types are sonnets‚odes‚free verse‚and elegies. *Dramatic Poetry- a dramatic poem is a verse that relies heavily on dramatic elements such as monologue or dialogue. Two types of dramatic poetry
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obtain precise measurements‚ complex equipments should be used .Take precaution in multiple trials to decrease errors. One of the instruments that will be used is the vernier caliper‚ a vernier helps in reading millimeter of the fractional part of the scale. This is designed to take external linear dimensions‚ by contact between two opposing sides. With less accuracy‚ it also measure internal dimensions‚ depths‚ bumps‚ among other. The next instrument being used is the micrometer caliper is
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Patents: General: Meaning of patent The word patent is not defined in the tax legislation. The legislation covers patents granted anywhere in the world except where it specifically refers to a UK patent. A patent consists of rights conferred by letters patent to the exclusive use and benefits of a particular invention. It will last for a specified period. The period for which a patent lasts is often referred to as the term of the patent. A patent is a form of protection for an inventor. A person
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balances can give. Summary of Procedures Determine the mass with the triple beam scale to the most precise measurement possible for the scale. First we measure the mass of the beaker. We measure the beaker with the sample inside it and subtract the beakers weight. This will give us an accurate measurement of the sample. Repeat exercise with electronic scale. Figured out the difference in precision of the scales. Pre-laboratory Questions What are the differences in meaning between mass and
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Our body proportion can be seen in table 1. Name and Scale Factor * | Yowie’s height estimate (nearest cm) | Kate’s Scale Factor (6.75x43) | 290 | Maybelline’s Scale Factor (6.65x43) | 286 | Ashleigh’s Scale Factor (6.70x43) | 288 | Tamara’s Scale Factor (7.48x43) | 322 | Mean Scale Factor(6.895x43) | 296 | Table 1 - Body Measurements Used Table 2 - Scale Factor Height Estimate Name | Foot Length (cm) | Height^(cm)
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