it can be said that friction always acts opposite the motion of the object or the force applied. There are two main types of friction: Static friction: the frictional force that opposes any attempt to move a stationary object along a surface. Kinetic friction: this frictional force opposes the sliding motion of two surfaces rubbing together. Physically‚ friction arises from surface roughness and attractive forces between the surfaces of two objects in contact. The frictional force depends
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Potential Energy: Potential energy is the stored energy of position possessed by an object. Potential Energy Formula : Potential Energy: PE = m x g x h Mass: Acceleration of Gravity: Height: where‚ PE = Potential Energy‚ m = Mass of object‚ g = Acceleration of Gravity‚ h = Height of object‚ Examples: 1. A cat had climbed at the top of the tree. The Tree is 20 meters high and the cat weighs 6kg. How much potential energy does the cat have? m = 6 kg‚ h = 20
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Energy A. Kinetic Energy 1. Kinetic energy is associated with an object in motion. 2. Kinetic energy depends on speed and mass Kinetic Energy = ½mv2 3. Kinetic energy is a scalar and will use Joules as its standard unit. 4. It takes some work to change an object’s kinetic energy either by changing the velocity or changing the mass. 5. This fact leads us to the Work-Kinetic Energy Theorem
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AM Lab Instructor: Uttar Pudasaini Introduction In this experiment we will be examining how the kinetic friction coefficient is altered by changing the mass‚ surface area‚ speed‚ and material contacting each other. In order to find this value‚ we will be using a pulley apparatus that will allow us to measure the average velocity and manipulate Newton’s Second Law of Motion to find the kinetic friction coefficient. Based on contacting each other. Procedures First we began by leveling the track
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Chemistry II lab Why do liquids evaporate at different rates? Section1: Have you ever left a container with some type of liquid in it and wondered how it could it evaporate so quickly? The evaporation of an unpredictable liquid is an endothermic process that results in a temperature decrease. The amount of temperature decrease is related to the strength of intermolecular forces of attraction. The rate of evaporation can be described as the change of temperature divided by the time it takes to
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Sugar (Sucrose)- C12H22O11 Vitamin C (Ascorbic Acid)- C6H8O6 Aspirin (Acetylsalicylic Acid)- C9H8O4 Common Name | Chemical Name | acetone | dimethyl ketone; 2-propanone (usually known as acetone) | acid potassium sulfate | potassium bisulfate - used in the conversion of tartrates to bitartrates in wine. | acid of sugar | oxalic acid – used in cleaning or bleaching‚ especially for the removal of rust (iron complexing agent) | ackey | nitric acid | alcali volatil | ammonium
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The traditional TOK diagram indicates four ways of knowing. Propose the inclusion of a fifth way of knowing selected from intuition‚ memory or imagination‚ and explore the knowledge issues it may raise in two areas of knowledge. The study of Theory of Knowledge (TOK) indicates four distinct ways of knowing: sense perception‚ emotion‚ reason and language; however‚ in this essay I will argue
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OBJECTIVE The purpose of this experiment is to calculate the gravitational potential energy through experimental values‚ to calculate the theoretical potential energy given the experimental kinetic energy in an isolated system while also using the kinetic energy to find the spring constant‚ and to compare kinetic energies and potential energies in an isolated system to see if they are equivalent. METHOD To calculate the gravitational potential energy through experimental values‚ we dropped a
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properties: Potential energy and Kinetic energy. The law of Energy states that: Total Energy = Potential Energy + Kinetic Energy Or Em = Ep + Ek Also‚ the equations for Potential energy and Kinetic energy are stated to get the Total Energy. They are respectively: Ep = mgh and Ek = ½ (m)v2 The Conservation of Energy states that energy is always constant. If potential energy increases then kinetic energy decreases and vice versa
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been verified.The “Kinetics of Ethanol Oxidation” laboratory experiment utilized Beer’s law and spectroscopy to monitor concentration and the rate of ethanol oxidation through the LoggerPro System. This data then helped determine the kinetic rate constant‚ k‚ and the order of the reaction. First‚ the wavelength of maximum absorbance was determined using the LoggerPro interface and a Vernier colorimeter. Beer’s law was then used to determine the molar absorptivity. Finally‚ a kinetic study of ethanol
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