Expansion Most substances expand when they are heated and contract when they are cooled. Heat causes expansion because it increases the vibrations of the atoms or molecules of a substance. The increased vibration forces the atoms or molecules further apart and the substance becomes larger, i.e. expands. When the substance cools down, it becomes smaller, i.e. contracts. Expansion and Contraction of Solids Solids expand in all directions when heated but the amount of expansion is usually
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Introduction Last week we did an experiment on how does the volume of an container affect the mass required to make it awash in water.Some concerns we had were how would we know when it would be a good time to stop adding washers. Or how do we know our trials not change. The independent variable was the size of the beaker and the dependent was the number of washers that were needed. The controlled variables were the amount of gasses in the water because its tap and the temperature of the water.
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Collider is the largest and most powerful particle accelerator ever built. It was built by the European Organization for Nuclear Research (CERN) from 1998 to 2008, with the aim of allowing physicists to test the predictions of different theories of physics. It is designed to smash tiny particles into tinier ones to find out the stuff from which the universe is made. The LHC consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures to boost the energy of the
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America’s history of regulating private ownership of firearms goes back to the year 1791, when the Bill of Rights gained its final ratification. The Second Amendment of the Bill of Rights states, “A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.". The true meaning of the Second Amendment is that we, as Americans, are guaranteed the right to keep and bear arms. This right must not be infringed upon.
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Shanmate Singh Chemistry102 Lab 2) Experimental procedure, Part A.2. Complete the calculation required to appear on the report sheet. 4) Experimental procedure, Part A.3b. Explain how a water filled graduated cylinder is inverted in a pan of water. The glass-collecting vessel is filled with water and covered with a glass plate or plastic wrap, which is to prevent air bubbles from getting into the vessel. The vessel is then flipped and placed into the pan of water where the glass plate or
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Questions and Answers for Conceptual Physical Science Practical 1. How many rolls did it take for the number of each colored cube to be reduced by half? These are your half-life readings One-side color: 8 throws Two-side color: 5 throws Three-side color: 3 throws 2. The half-life of a decaying substance is measured in units of time. What is the unit of half-life used in this simulation? Remaining per throw 3. In each case, how many rolls did it take to remove all the cubes? One-side color:
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The primary objectives of the proposed MGOA pay for performance was to return MGOA back to financial stability by motivating the doctors to increase their clinical productivity, ensuring repeated performance, allocating all departmental cost to the doctors and eliminating the salary protection presently provided for low performance. The compensation plan attempted to reward the doctors for number of surgeries they could perform (clinical productivity) in any given period. The new MGOA pay for performance
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Name Pishoy Shehata Projectile Motion Go to http://phet.colorado.edu/simulations/sims.php?sim=Projectile_Motion and click on Run Now. Pre Lab Reflections: What are the ● What forces are at play on a body under fall ? Under free fall, the only force acting upon an object is the force of gravity. But realistically, there is also the force of friction from the air (Air Resistance) that opposes the force of gravity. ● Make a prediction of which angle results in maximum range. Activity:
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Abstract: In performing the Simple Harmonic Motion Lab, our goal was to determine the period of motion for objects performing simple harmonic motion. We did five trials of measuring the time it took a pendulum to make 30 complete oscillations. We divided that time by 30 to get the period and then took the average of all 5 trials, getting an average period of 1.88 seconds. To compare our results, and see if they were correct, we used the given equation for the period of motion that includes the length
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Available online at www.sciencedirect.com Physics Procedia 20 (2011) 404–419 Space, Propulsion & Energy Sciences International Forum - 2011 Conventional physics can explain cold fusion excess heat S. R. Chubb* Infinite Energy Magazine, 9822 Pebble Weigh Ct, Burke, VA 22015-3378 Abstract In 1989, when Fleischmann, Pons and Hawkins (FP), claimed they had created room temperature, nuclear fusion in a solid, a firestorm of controversy erupted. Beginning in 1991, the Office of Naval Research
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