have chosen to talk to you about friction. Friction is the force between two objects in contact with each other‚ making it a contact force. It causes moving objects to slow down. Air resistance is a type of friction. Friction is an important force in our lives. We rely on friction in many ways. An athlete usually wears shoes which provide him/her with a greater friction between the shoe and the surface. We rely on friction as an important aspect of motion. Friction can be a very useful force because
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Vocabulary Chapter 16-22 Compact theory - Regarding the Constitution of the United States of America‚ the compact theory holds that the nation was formed through a compact agreed upon by all the states‚ and that the federal government is consequently a creation of the states. Consequently‚ states should be the final arbiters over whether the federal government had overstepped the limits of its authority as set forth in the compact. Contract theory - studies how economic actors can and do construct
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Friction Peter Jeschofnig‚ Ph.D. Version 42-0262-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information
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Coefficients of Friction Discussion: Friction is the force that resists motion and can be determined in either static situations or kinetic situations using the following equation: [pic] Static friction is the amount of friction that resists the start of motion and kinetic friction resists an object’s continued motion. The coefficient of friction depends on a number of factors including surface area and the types of surfaces in contact. The only way to determine a coefficient of friction is experimentally
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Friction Friction Peter Jeschofnig‚ Ph.D. Version 09-1.01 Objectives To provide an understanding of the concept of friction‚ and To calculate the coefficient of friction of an object by two methods. Materials From: Label or Box/Bag: Student Provides Qty Item Description: 1 1 1 1 1 1 1 From LabPaq Ramp board: 3 - 4 feet long‚ 10 cm wide Can of soft drink or item of similar weight Friction block set-PK Protractor Scale-Spring-500-g Tape measure‚ 1.5-m Tape
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CHAPTER 2 SOLUTIONS TO SUPPLEMENTARY PROBLEMS FROM SCOTT TEXTBOOK 6th edition 11. Several reasons can be suggested why oil company managers have reservations about RRA: • The discount rate of 10% might not reflect the firm’s cost of capital. • Low reliability. RRA involves making a large number of assumptions and estimates. While SFAS 69 deals with low reliability in part by requiring end-of-period oil and gas prices to be used (rather than prices anticipated when the reserves are expected
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Pipe Friction Summary The purpose of this lab is to find the friction factor and Reynolds number for laminar and turbulent flow and also for values in the critical zone. Results were taken recorded and used to calculate the friction factor and Reynolds number. They were then compared with the Moody diagram. Aim This lab could be used in industry when dealing with a pipe line containing any type of liquid to calculate the Reynolds number and friction factor. It would also help in pipe
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EFFECT OF SURFACE AREA ON AIR FRICTION Design Background Information: Air resistance‚ also called drag‚ is the forces that are in opposition to the relative motion of an object through the air. Drag forces act opposite to the oncoming flow velocity. Size and shape are the two factors that affect air resistance. Air resistance depends on the surface area‚ so‚ as the surface area increases‚ the air resistance increases. When an object is falling‚ air resistance acts to push it back up. This is
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Drama In the 1580s Philip Sidney complained that English playwrights were ignoring the principles of drama; he meant the classical principles exemplified by the tragedies of Seneca and the comedies of Plautus‚ Ben Jonson published his own plays in a grandiose format‚ and with a title (The Works of Benjamin Jonson)‚ that invited comparison with the editions of these same dramatists. The prologue to the first play in this collection‚ Every Man In His Humour*‚ announces that its author ’hath
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Static Friction INTRODUCTION When an object is placed on a surface it will remain static unless the resolved component of the force due to gravity acting parallel to the surface exceeds the friction force associated with the static coefficient of friction between surfaces by placing various objects on a surface and tilting the surface until the object begins to slip. By measuring the angle at which the object begins to slip‚ it is then possible to calculate the coefficient of friction between
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