FRICTION Problem 507 The 2225-N block shown in Fig. P-507 is in contact with 45° incline. The coefficient of static friction is 0.25. Compute the value of the horizontal force P necessary to (a) just start the block up the incline or (b) just prevent motion down the incline. (c) If P = 1780 N‚ what is the amount and direction of the friction force? Solution 507 Part (a) – Force P to just start the block to move up the incline The force P is pushing the block up the incline. The push
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Static Electricity Everything is made up of tiny particles called atoms. The atoms are made up of even smaller parts called protons‚ electrons and neutrons. Protons have a positive charge (+)‚ electrons have a negative charge (-) and neutrons have no charge at all‚ they are neutral. Atoms normally have the same amount of electrons and protons‚ making them neutral and having no charge. When rubbing things together‚ electrons can move from one atom to another‚ resulting in some atoms having extra
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egrettably‚ Professor Jayavel Sounderpandian passed away before the revision of the text commenced. He had been a consistent champion of the book‚ first as a loyal user and later as a productive co-author. His many contributions and contagious enthusiasm will be sorely missed. In the seventh edition of Complete Business Statistics‚ we focus on many improvements in the text‚ driven largely by recommendations from dedicated users and others who teach business statistics. In their reviews‚ these
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Jackie Elliot is seen as a traditional man with anti feminist views. he sees that boys should be tough whilst girls should be more placid. Throughout the film Billy Elliot‚ the directer has created the character Jackie Elliot‚ a widowed father feeling the grief of the recent lose of his wife. This essay suggests that the grief could be a factor of how Jackie goes about supporting his son. The time that this film is set‚ is in the mid 80s. It could be that people who do not keep to the social norm
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2 devices that use static electricity to funtion 1. Van de Graaff generator When the motor is turned on‚ the lower roller (charger) begins turning the belt. The belt is made of rubber and the lower roller is covered in silicon tape‚ the lower roller begins to build a negative charge and the belt builds a positive charge. Silicon is more negative than rubber so the lower roller is receiving electrons from the belt when it goes over the roller. The positively charged atomic nuclei‚ try to
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Visual techniques are used in the film Billy Elliot directed by Steven Daldry to help the viewer develop deeper ideas about how society accepts homosexuality and other things that are usually looked upon as “not right “. Steven uses a range of visual techniques such as camera angles/shots‚ acting‚ and symbols to show us how people react when someone is seen as different and doesn’t hesitate to show it. Steven Daldry uses camera angles and shots in the film to show facial expression and how people
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I. Marketing Plan A. Situation analysis Description of the company’s present target market and the position it holds in that market. It includes information about the market‚ product performance‚ distribution system and competitors. The following should be included: A description of the market that will define the market and its segments‚ and a description of consumer needs and the environmental factors that may affect their buying patterns. A description
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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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ENGR 210 - Statics Tutorial 1 Your Name: Partner’s Names: Section:_____________ _______________________ _________________ _________________ _________________ _________________ _________________ _________________ VECTORS This assignment will introduce the use of the Cartesian Coordinate System‚ vector notation‚ and properties of vectors to find corresponding unit vectors and resultant forces. The dot product will also be introduced. Each group will choose the origin of a coordinate system in
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Engineering Mechanics - Statics Chapter 1 Problem 1-1 Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m/ms (b) μkm (c) ks/mg (d) km⋅ μN Units Used: μN = 10 −6 N km μkm = 10 9 −6 Gs = 10 s ks = 10 s mN = 10 ms = 10 Solution: ( a) m 3m = 1 × 10 ms s m km =1 ms s ( b) μkm = 1 × 10 μkm = 1 mm ( c) ks 9 s = 1 × 10 mg kg ks Gs =1 mg kg ( d) km⋅ μN = 1 × 10 −3 −3 −3 3 N s −3 m mN km⋅ μN = 1 mm⋅ N 1 ©
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