Static and Kinetic Friction Introduction The amount of friction force between two surfaces in contact depends on the type of the surfaces in contact and the amount of compression between the surfaces. Static friction is the force that is acting against your force before the object begins to move. If you exert a small push on the box‚ the box will not move because static friction is directly opposite to the push. If you apply a greater force than the static friction force‚ the friction increases
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Title: States of Matter Introductions: In this activity you will investigate the physical science of the different states of matter. You are going to see how different atoms and molecules (types of particles) change state (solid‚ liquid‚ and gas) when they are heated or cooled. 1. Click on the link: http://phet.colorado.edu/ This is a screen shot of the website: 2. Click the “Play with sims” button. 3. Click “New Sims”->Click “States of Matter: Basics”->Click “Run Now” This is a screen shot
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Kinetics of an SN1 reaction: the effect of solvent on rate Object The purpose of this experiment is to determine the rate of hydrolysis in acetone/water (50/50 v/v and 60/40 v/v). Background and Theory An SN1 reaction of tert-butyl chloride takes place in two steps. First‚ the Alkyl Halide will leave the molecule. In this step the bond is breaking‚ which takes a longer amount of time‚ so it will determine the rate of the reaction. As a result‚ it forms a tertiary carbocation‚ since this
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The two different types of energy are kinetic and potential energy. Kinetic energy is the energy a moving object has because of its motion. The kinetic energy of a moving object depends on the object’s mass and its speed. The kinetic energy of a moving object can be calculated from this equation: Kinetic energy (in joules) = ½ mass (in kg) x [speed (in m/s)]² KE= ½ mv² In this equation ^‚ the symbol v represents speed. Example Find the kinetic energy of the ball having mass 0‚5 kg and
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PSC 41- Specific Heat Capacity and Latent Heat Constants: Specific heat capacity ofwater=4180 J Kg-1 K-1 Specific heat capacity of ice=2050 J Kg-1 K-1 Specific heat capacity of copper= 386 J Kg-1 K-1 Specific heat capacity of aluminum=900 J Kg-1 K-1 Latent heat of vaporization of water =2.26x106 J Kg-1 Latent heat of fusion of water = 3.34x105 J Kg-1 Density of water =1000 Kg m-3 Conversion : 1L ≡ 103 g for water 1) A 12.5 g sample of an unknown metal‚ heated to 99.0
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MP3003/AE3003 Heat Transfer Semester 1‚ AY 2012-2013 (9) Heat Exchangers by Assoc Prof Leong Kai Choong School of Mechanical and Aerospace Engineering Read Chapter 11 of the textbook before these lecture slides © Dr. K.C. Leong‚ 2006 Lecture 2:Radiation & Conservation of Energy Requirement Learning Objectives At the end of these lectures‚ you should be able to: • recognise numerous types of heat exchangers‚ and classify them‚ • develop an awareness of fouling on surfaces‚ and determine
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Learning Goals: • Predict the kinetic and potential energy of objects. • Examine how kinetic and potential energy interact with each other. In the space provided‚ define the following words: Kinetic energy-is the energy of motion. An object that has motion - whether it is vertical or horizontal motion Potential energy-is the energy of an object or a system due to the position of the body or the arrangement of the particles of the system Open Internet Explorer. From the FMS
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Matter is a poorly-defined term in science (see below). The term has often been used in reference to a substance (often a particle) that has rest mass. Matter is also used loosely as a general term for the substance that makes up all observable physical objects.[1][2] All objects we see with the naked eye are composed of atoms. This atomic matter is in turn made up of interacting subatomic particles—usually a nucleus of protons and neutrons‚ and a cloud of orbiting electrons.[3][4] Typically‚ science
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Lecture No. 1 Chemical Kinetics 1.1 The Rate of a Reaction Chemical Kinetics is the area of Chemistry that is concerned with the speed‚ rate or mechanism at which a chemical reaction occurs. Reaction Rate is the change in the concentration of a reactant or product with time (i.e. M/s). It measures how fast a reactant is consumed and how fast a product is formed. 1.2 WRITING RATE EXPRESSIONS Consider the following hypothetical reaction. A + 2B ( 3C + D Rate = - rate
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Introduction- Heat is energy that is warm. Heat energy comes from different energy forms or types like electrical. Heat is also natural‚ from the sun. Heat transforms by reflecting on something and giving it warmth. The temperatures on the coloured cans will vary because they absorb different amounts of heat. According to the particle theory when an object heats up the particles spread out and move more. Aim- The aim of this experiment is to test how colour affects the amount of heat being absorbed
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