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Calorimetry - The Study of Heat Transfer
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Calorimetry - The Study of Heat Transfer. Absolute zero is the temperature at which particles reach a minimum amount of energy, vibration, and motion. The kelvin scale is based on this temperature, and is 0 K. On the Celsius scale, absolute zero is -273.15°C. On the Fahreneheit scale, it is nearly -460°F. What is a Calorie? The calorie is a unit of measurement of heat. It is no longer used, as the SI. 1 calorie = 4.184 J. Represents heat, measured in joules. C. Use the specific heat. Is calculated by sub...
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Types of Forces - Weight, Normal, Tension, Friction, and Applied Forces
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Recall that a force is something that causes an object to accelerate. This means that a force has been applied when the magnitude of speed and/or direction of an object has changed. Typically there are five categories of forces to consider. Since force is the product of mass and acceleration, the units for force are the product of those units. Mass is measured in kilograms and acceleration in m/s 2. Thus the unit for force can be expressed as kg×m/s 2. Is equivalent to a newton. Friction exists when one ...
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Inertia: Newton's First Law, Laziness, and the Intertial Balance
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Inertia: The "Laziness" of an Object. Connections to Newton's First Law. Mass, and therefore inertia, is an inherent property of all matter. An intertial balance. Compare the shape of the graph of period vs. mass (non-linear) to period squared vs mass (linear):. Bull; Atomic Structure. Bull; Electromagnetic Radiation. Bull; Inclined Plane. Bull; Significant Digits. Bull; Unit Conversions. Bull; Español. Bull; Français. Bull; 한국어. Bull; हिन्दी. Bull; 日本語. Bull; Português. Bull; 中文. United States of America.
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The Atom - Atomic Structure
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The Atom - Atomic Structure. The proton is the positively charge particle in the nucleus (nucleon). It is massive (for a subatomic particle), and each has a mass of 1.673E-27 kg. Since it is composed of three quarks (one down/two up), protons are a type of baryon. The identity of an atom is defined by the number of protons in its nuclues. That is, a chemist's definition of gold. Is arranged by atomic number, or the number of protons in an atom's nucleus. Truman Talley Books: New York, 1992. Bull; Espa&nt...
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Physics Resources | Theo J. Mertzimekis, PhD
http://mertzimekis.gr/home/links/online-resources
Theo J. Mertzimekis, PhD. LaTeX & Linux. Societies, Projects etc. Catkin (XLS for rel. kinematics by Prof. W. Catford). The Lund/LBNL Nuclear Data Search. NIST – Proton Stopping Powers in Materials. NIST – Electron Stopping Powers in Materials. NIST – Alpha Stopping Powers in Materials. Facts about Aluminum (submitted by young Anna). Leave a Reply Cancel reply. You must be logged in. To post a comment. Assistant Professor Department of Physics University of Athens. See more about…. See more about….
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Waves - Characteristics and Interactions
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A wave is an oscillation that transfers energy. It may or may not move through a medium such as air or water. Certain types of waves, referred to as mechanical waves can only propagate in a medium. Electromagnetic waves. May propagate through anything, including a vacuum like space. Bull; Atomic Structure. Bull; Electromagnetic Radiation. Bull; Inclined Plane. Bull; Significant Digits. Bull; Unit Conversions. Bull; Español. Bull; Français. Bull; 한국어. Bull; हिन्दी. Bull; 日本語. Bull; Português.
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Gases - Boyle's Law, Charles' Law, Gay-Lussac's Law, Combined Gas Law, Ideal Gas Law, Dalton's Law of Partial Pressures, Properties of Common Gases
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A Note About Units. Boyle's Law is an expression of the relationship between the pressure and volume of a fixed quantity of gas. It was initially described by Robert Boyle in the 17th century. Temperature and moles of gas are constant. Graph is hyperbolic (see below) and asymptotic to both axes. Pressure and volume are inversely proportional to each other. Find the pressure on 5.25 L of gas that was originally 3.12 L at 1.54 atm. For the initial conditions of the gas. V 2. Will be what we solve for:.
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The Atom - The History of Atomism
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The Atom - The History of Atomism. Demcoritus was a citizen of Greece in the 4th and 5th century B.C. Although not well known in his day, he was known to Plato. His idea of an atomic model was never tested, nor it could it have been with the technology of his day. In the early 19th century, Englishman John Dalton revived the atomic model with a five part theory that would set the course in atomic discoveries for the next 130 years:. 1 Elements are made of extremely small particles called atoms. 4) Grimes...
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Significant Digits/Significant Figures
http://physics-reference.com/sd/default.asp
Here's a little story that may help you understand the idea behind significant digits:. Some tourists at the Museum of Natural History are marveling at the dinosaur bones. One of them asks the guard, "Can you tell me how old these bonds are? The guard replies, "They're three million, four years and six months old.". That's an awfully exact number," says the tourist. "How do you know their age so precisely? The answer is you can’t! The number 147.240296 m 2. If there were a more precise meterstick than th...
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Electromagnetic Radiation (EMR), the Electromagnetic Spectrum, and the Electron
http://physics-reference.com/EMR/default.asp
Electromagnetic Radiation (EMR), the Electromagnetic Spectrum, and the Electron. The speed of light, 2.998 × 10 8. M/s, is remarkably fast for anything that takes place on Earth. However, when dealing with interplanetary distances, the speed of light can be used to show how far apart celestial objects are. Let's say you decide to call a friend (cell to cell) who lives 10 miles away. The waves will require 5.366 × 10 -5. S) to blink. The cell phone waves are traveling roughly 350 times faster than this.
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