Physics of a Guitar (Rough Draft) The guitar is the most played instrument in the music world. The oldest surviving guitar is thought to be made around 1776 in Italy by Gaetano Vinaccia. Though‚ the guitar looks like a simple instrument to construct or play there is a lot of physics behind the creation of it‚ from the strings to the air inside‚ the anatomy‚ and the sound spectrum. There are three types of guitars that are made: nylon acoustic‚ steel-string‚ and electric. Acoustic guitars produce
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ATOMIC PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus‚ surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a nucleon
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Interpretations: 1. The time required for the objects with different masses to fall equal distances was equal. 2. The average speed of the two different masses was quite similar‚ within one tenth of a second of each other. 3. Yes‚ because physics theory says that objects free falling‚ where the only force acting on them is gravity‚ accelerate at the same rate no matter what their mass is. 4. The change in spacing of the dots tells us that the speed of the object is increased as it falls
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WORKSHEET PHYSICS SECTION A Q1. Suppose you are in a dark room. Can you see the objects in the room? Can you see the objects outside the room? Explain your answer Q2. Write the two laws of reflection. Q3. Write two differences between diffused and regular reflection. Q4. Write whether in each case diffused or regular reflection takes place. a) Wood b) Polished surface c) Mirror d) Marble surface e) Chalk powder Q5. What is the angle of reflection if the angle between
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“Pit and the Pendulum Revision” “I shrank back- but the closing walls pressed me resistlessly onward. At length. For my seared and writhing body‚ there was no longer an inch of foot hold on the firm floor of the prison.” Closer and closer I was getting to the pit. I was thinking about everything that has happened. I didn’t want to die. It was too soon for me. Suddenly the walls stopped. I was confused and in shock. I heard a female voice‚ and it was a thick southern accent. She was telling me to
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P hysics 2 06 Example P roblems Newton’ s Laws of Motion Problem 1 . A) What is the direction of the acceleration of an object that is slowing down while heading northward? Answer : The acceleration would be southward since the net force required to cause this acceleration would be southward. The change in velocity is directed southward. B) What is the acceleration of an object thrown straight up in the air‚ near the surface of the earth‚ at the very top of its flight? Answer : The acceleration is
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Chapter 1-3: 1. B. a ball rolling down a hill 2. A. 0 3. C. Natural and violent 4. B. smoke rising up into the air 5. B. Inertia 6. C. increases 7. D. Report the findings 8. C. Physics is about the nature 9. B. Nikola Tesla Chapter 4-5: 1. B. 0 km/hr 2. D. 10m/s^2 3. B. 20 m/s 4. A. 1s 5. C. 50m/s 6. D. 2.5m/s^2 7. B. the same location 8. C. 141.1m 9. A. 2km/hr 10. A. the first kick Chapter 6: 1. F. if an object has zero.. 2. F. Pressure and force 3. T. In the absence
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University of the Philippines College of Science PHYSICS 72 SET A Second Semester 2010-2011 First Long Examination National Institute of Physics 2nd Sem AY 2010-2011 Physics 72 INSTRUCTIONS: Choose the best answer and shade the corresponding circle on your answer sheet. To change your answer‚ cross-out and sign your original answer and then shade your new answer. No computational devices allowed (e.g. calculators‚ mobile phones). Following instructions is part of the exam. Useful
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Since the birth of Physical Review Letters fifty years ago‚ condensed matter physics has seen considerable growth‚ and both the journal and the field have flourished during this period. In this essay‚ I begin with some general comments about condensed matter physics and then give some personal views on the conceptual development of the field and list some highlights. The focus is mostly on theoretical developments. DOI: 10.1103/PhysRevLett.101.250001 PACS numbers: 01.30.−y The transistor
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history of motion pictures The purpose of this lecture: 1. to provide a brief overview of the development of motion pictures 2. with an emphasis on the economic culture that developed historically. 3. This has meant an emphasis on profits and 4. an avoidance of controversy. I. Early moving pictures Note the term used in the early days of the industry: Moving pictures. Pictures that movied. From the 1850s on‚ there had been experimentation by photographers and others in reproducing human motion. First
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