centripetal acceleration. Centripetal force means “center seeking.” It is the force responsible for keeping an object in circular motion. If there were no centripetal force the object would fly off at a tangent because of Newton’s First Law. This is demonstrated by spinning an object on a string. If the string were to break or be cut‚ the object would fly out of its circular path at a tangent. An equation can be used to represent the relationship between centripetal force‚ mass‚ velocity‚ and
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| | Kinetics Author: Katie Wood Instructor: Donald Kavanagh Chem 106b‚ Section 001 Lab Performed 8th‚ 2012 Lab Report Submitted February 22nd‚ 2012 Abstract The purpose of the lab was to determine the order of reaction for the dye Red #40. By measuring the reaction rate between bleach and the dye‚ the order of the reaction was determined to be first order. Introduction The study of kinetics is important for studying the amount of time it takes for a particular reaction to reach
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9/23/12 Lab Report #1 Meter Reading Summary The objective of this experiment was to learn how to read different meters like the D.C. volt meter and the D.C. amperes meter. In all meters each big line is a major division and each little line in between is a minor division‚ and if there is a line smaller than the minor division lines then that would be a sub minor division. Each meter has a low‚ medium‚ and high range. For example on the D.C. volt meter the ranges go from top to bottom 150‚ 15‚
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Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
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circle) were used to describe anomalies such as the retrograde motion of planets. Equants (a point which the centre of a planet’s epicycle moved at a uniform velocity) were used to approximate where planets would be at a certain time. Even though the Ptolemaic model had various defects‚ as astronomers assumed that all the planets revolved at a uniform rate‚ planets revolved in perfect circles‚ and didn’t explain the retrograde motion of planets that it was formulated to do; it was still widely accepted
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Introduction The aims of the lab session was to familiarize with the principles‚ operation and application of a light spectrophotometer. This report discusses an experiment to study the relationship of absorbance and concentration‚ the interaction of electromagnetic radiant energy(ERE) and matter which is an important aspect of the Beer-Lambert ’s Law. This law states that the absorption of a compound is directly proportional to the concentration of that particular compound. This is because (a &
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during the lab session Procedure Part A This lab was performed by the group members as they closed both low and high flow rotameters (Fig-2) and filled the tank with water. Then‚ the large rotameter was opened when the water in the tank had reached the internal baffle‚ so the flow from the tank was reduced by doing so. One member was in charge of adjusting the level of the water so it was always maintained over the baffle’s level during the lab (Fig-1). The first part of the lab was done
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INTRODUCTION During collisions involving two bodies‚ equal and opposite forces are set up between them. These impact forces influence the subsequent motion of the bodies. Momentum of the system (consisting of both bodies) is preserved if both bodies are free to move in space. This is because there is no external forces act on the system. The forces acting between the bodies during the small interval of time when they are in contact cause changes in the velocities of each separate body. An
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Lab Report Marisa McKinney P. 2 Purpose: To investigate the periodic variation of density in Group 4A elements. Background: When the elements are arranged in order of increasing atomic number‚ they exhibit periodic recurrence of properties. Elements in the same group in the periodic table tend to have similar physical and chemical properties. These similarities are due‚ in large part‚ to similarities among the electron configurations of the elements in a group. You can find periodic
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"18. Dehydration of 2- Methylcyclohexanol." Organic Chemistry Lab 2040L. XU Chemistry‚ n.d. Web. 12 Feb. 2013. 2. "Material Safety Data Sheet 2-Methylcyclohexanol." Http://www.coleparmer.com/Assets/Msds/97403.htm. Coleparmer‚ 19 Mar. 1998. Web. 12 Feb. 2013. 3. "Material Safety Data Sheet Methylcyclohexane." Sciencelab.com. Science Lab‚ 09 Oct. 2005. Web. 12 Feb. 2013. 4. Helmenstine‚ Anne M.‚ Ph.D. "How to Write a Lab Report." About.com Chemistry. About.com Guide‚ n.d. Web. 23 Feb. 2013
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