Kinematics / Projectiles x =?vt ?v = (v + vo)/2 v = vo + at x = vot + ½at2 v2 = vo2 + 2ax y =?vt ?v ’ ½(vo + v) v = vo – gt y = vot – ½gt2 v2= vo2 – 2gy R = (v02/g)sin(2θ) Forces Fnet = ma Fgravity = mg Ffriction ≤ μsN Ffriction = μkN Circular Motion Fnet = mv2/r ac = v2/r v = 2πr/T f = 1/T T = 1/f Gravitation F = GM1M2/R2 g = GM/R2 T2/R3 = 4π2/GM = constant GM = Rv2 Energy W = Fdcosθ KE
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Invention of Telephone and Development Invention of the phone (1876 ): Scottish-born Alexander Graham Bell speaking educators on March 7‚ 1876 the first telephone was invented and received a patent . Deaf studies related to vibration in the air with the sounds of Bella wondered how that had led him to . " Harmonic telegraph" his name while working on a mechanism of electric current to resemble the vibration caused during a conversation I had found could have been changed . According to this
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** Atom and Introduction to Nuclear physics ** Introduction Alpha-particle scattering 2.1 Experimental set-up ➢ Alpha particle o is a high-energy helium nucleus with 2 protons and 2 neutrons. o has 2 positive charges. ➢ Gold foil was chosen since it has a high atomic mass. Thin gold foil‚ ~10-6m was bombarded by high-energy alpha particles. ➢ Angular deflections/ scattering of alpha particles were measured by observing
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The Renaissance was a time of rebirth in Europe. During this time period‚ many different inventions were made and there were many different advancements in math and science. One important invention that was made during this time of rebirth was the printing press with moveable type. The printing press was a revolutionary invention that an inventor named Johann Gutenberg created. Using the printing press‚ multiple pages could be printed at once and learning spread faster than ever before. Also‚ with
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Space Definitions Field Vector A field vector is a single vector that describes the strengths and direction of a uniform vector field. For a gravitational field‚ the field vector is g Weight Weight is defined as the force on a mass due to the gravitational field of a large celestial body such as the Earth Gravitational Potential Energy Gravitational Potential Energy is the energy of a mass due to its position within a gravitational field. On a large scale GPE is defined as the work done
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The Roman Empire was the most successful ancient civilization.They created many inventions.Second‚They had very great food.Third‚ they had the best army. Inventions The Romans invented toilets‚they invented toilets in the bronze and iron age‚Indoor plumbing was not for everybody‚only the richest could afford them in their houses‚all toilets were public except the people you bought them in there house.They built numerous concrete structures that still stand today.They built numerous concrete structures
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http://www.ndt-ed.org/EducationResources/CommunityCollege/Radiography/EquipmentMaterials/xrayGenerators.htm http://faculty.mwsu.edu/radsci/gary.morrison/RADS_1513/Chapters_5&39/X-ray_Circuits_and_Equipment.pdf http://www.wikiradiography.com/page/Physics+of+the+X-Ray+Tube http://en.wikipedia.org/wiki/ Books Sinclair Tousey‚ Medical electricity and Rontgen rays (3rd Edition) W. B. Saunders Co. 1921 Stewart Bushong‚ Radiologic Science for Technologist St. Louis: Mosby (9th Edition)
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Renaissance invention S-Y-N-O-N-Y-M what kind of word is this? But more importantly‚ how the heck am I supposed to pronounce this‚ I frustratedly thought to myself. “Trying to read again”. Dad asked as he walked in my room with a fabricated smile face. “Yep‚ Can you help me again? I asked in a wary voice “Maybe later‚ you know our neighbors Johannes Gutenberg? “Yeah” I responded “what about him?” “He’s working on some printing press that I’m helping him with”‚He added. “See you at dinner”. He
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charges are moving from the switch to the battery to the light. It could also be consider kinetic because of the movement of the charges. Step 4: The dominos are hit by the car which causes them to pitch forward and fall in succession. The domino effect on the domino’s is potential energy. From the car traveling down the inclined plane‚ the cars force pushed the dominos over which is potential energy because of the pull of gravity in the domino’s movement‚ it stays in place. This is also applied
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collision must involve a sufficient amount of energy‚ provided from the motion of the particles‚ to overcome the activation energy. | | (B) | The relative orientation of the particles has little or no effect on the formation of the product. | | (C) | The relative orientation of the particles has an effect only if the kinetic energy of the particles is below some minimum value. | | (D) | The relative orientation of the particles must allow for formation of the new bonds in the product. | | (E)
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