What Is Physics and What Are Its Uses? Physics‚ a branch of science‚ is traditionally defined as the study of matter‚ energy‚ and the relation between them. The interaction between matter and energy is found everywhere. In order for matter to move‚ it requires some form of energy. Sports show many good examples of the relationship between matter and energy. For instance‚ a pitcher requires energy to throw a baseball at the incredible speed and accuracy that is needed to keep the batter from
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A force can do one of four things to an object: 1. Make it speed up - accelerate. 2. Make it slow down - decelerate. 3. Change its direction. 4. Change its shape. If something is doing one of these four things there must be net force acting upon it. Newton’s First Law ’Every body continues in a state of rest or uniform motion unless acted upon by an external force.’ Something without net force acting on it will either stay still or move at a constant speed in a straight line until
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Experiment 1.7: Graphical Analysis of Motion Introduction To graphically analyze motion‚ two graphs are commonly used: Displacement vs. Time and Velocity vs. Time. These two graphs provide significant information about motion including distance/displacement‚ speed/velocity‚ and acceleration. The displacement and acceleration of a moving body can be obtained from its Velocity vs. Time graph by respectively finding the area and the slope of the graph. Data Tables – Part I Displacement
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STARWARD ACADEMY WORKSHEET # 2 MOMENTUM DUE: 1. Calculate the momentum of an object if: (a) its mass is 4.0 kg and its velocity is 8.0 ms-1 (b) its mass is 500 kg and its velocity is 3.0 kms-1 (c) a force of 20 N is applied to it for 6.0 s and it moves from rest (d) its mass is 2.0 kg and it falls from rest for 10 s (assuming g = 10 ms-1 or 10 Nkg-1). 2. A car of 1200 kg is pushed along a level road by two men. If they use a force of 800 N and frictional forces acting against
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1. How many significant figures are in the following a. 100000007 9 significant figures b. 0.000000010 2 significant figures c. 9.02000 3 significant figures d. 100000 1 significant figures 2. Multiply or divide the following and give the answer in significant figures a. 35.2 x .0071= 2.4992 =2.50 b 2000 divided by 3.33= 600.6006006 = 600 c 45.5 x 2.22 x 10= 1010.1 = 1000 3. Add or subtract the following place answer
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A Bug’s Life – Text Analysis Synopsis: A Bug’s Life is a 1998 computer-animated Disney/Pixar movie. Inspired by the fable "The Ant and the Grasshopper" and the classic samurai film The Seven Samurai‚ it tells the story of an outcast inventor ant named Flick who recruits a group of circus bugs he mistakes for warriors when his colony is threatened by a gang of grasshoppers for their annual feast. The purpose of A Bug’s Life: The reason I have chosen this film text it because its purpose expresses
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Carmela Marie C. Beloso Why Do I Want to Become an Engineer? Why do I want to become an engineer? Is a question I often ask myself and often have difficulty answering. When other people are asked with this question‚ they would have instant answers such as: It’s been my dream since I was little‚ I like machines‚ It’s because of LEGO.‚ My father is an engineer.‚ and etcetera. I wish I could have the same answer as them. I wish I could tell a story where when I was young‚ I would take my toys apart
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Pendulum Problems ACTIVITY 1: Copy and paste the example problem and the steps‚ so that the steps are in the correct order into a new Word document and upload it to Moodle. Example Problem 1: A hypnotist swings her watch from 20.0cm chain in front of a subject’s eyes. What is the period of the swing of the watch. Thus‚ we see that the pendulum used by the hypnotist has a period of 0.898s. | Before we can use this formula‚ however‚ we must ensure all our variables are in the correct units.
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TUTORIAL 1 1. Convert the following temperatures to their values on the Fahrenheit and Kelvin scales: (a) the boiling point of liquid hydrogen‚ –252.87°C (b) the temperature of a room at 20°C. 2. A constant-volume gas thermometer is calibrated in dry ice (–80.0°C) and in boiling ethyl alcohol (78.0°C). The respective pressures are 0.900 atm and 1.635 atm. (a) What value of absolute zero does the calibration yield? (b) What pressures would be found at the freezing and boiling points of water
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International Biodiversity Conference 2010 VCAA EXAM With increasing prevalence of environmental issues on a global scale‚ controversy has risen from whether ‘we’ as humanitarians are taking responsibility for our actions. A transcript of Professor Chris Lee’s speech at the 2010 International Biodiversity Conference asserts that‚ ‘the time to talk is over‚’ and that now “is the time for serious action” to be taken towards making amends for the environmental damage and economical imbalance in
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