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Inclined plane - Wikipedia, the free encyclopedia The inclined plane permits one to overcome a large resistance by applying a relatively small force through a longer distance than the load is to be raised. Other simple machines based on the inclined plane include the blade, in which two inclined planes placed back to back allow the two parts of the cut object to move apart using less force than would be needed to pull them apart in opposite directions. Detailed understanding of inclined planes and their use helped lead to the understanding of how vector quantities such as forces can be usefully decomposed and manipulated mathematically. en.wikipedia.org /wiki/Inclined_plane   (789 words)

physics911.ca - Articles   (Site not responding. Last check: 2007-11-01) The minimum possible amount of the plane which can have avoided the impact area is a figure something greater than this because the analysis has been biased by a number of factors, beyond credibility in favour of fitting the plane through. Assuming half the plane to be inside the building, and the explosion to be just inside the hole, at this time the tail is still about 77 ft to the front of the wall. Even if the plane went in at the crazy angle of a 90 degree wing tilt, the wing extremities covering a total span of 125 ft, above and below the explosion still have to be cremated, meaning that an equal span of force has to be generated sideways along the wallface. physics911.ca /modules/news/article.php?storyid=13   (7335 words)

Etheric plane - Wikipedia, the free encyclopedia The etheric plane or etheric region is one of the planes of existence, or more specifically a subplane or planes, in esoteric philosophies, in some religious teachings and in New Age thought. It might be argued that the etheric plane is in part equivalent to Sri Aurobindo's concept of the subtle physical. The ether, which is disposed in four grades of density, is considered to be physical matter and responsive to the same laws which govern other physical substances upon the physical world (the blue haze seen in mountain canyons is said to be in fact ether of the kind known to occult investigators as chemical ether). en.wikipedia.org /wiki/Etheric_plane   (1408 words)

Inclined Plane The relationship between the inclined plane and the helix is demonstrated by the paper model of a helix at the University of Mississippi. The plane itself is made of glass, and there is an auxiliary pulley at the upper end of the plane to keep the cord attached to [missing] sliding body parallel to the plane. This unmarked inclined plane is at the physics department of the University of Texas in Austin. physics.kenyon.edu /EarlyApparatus/Mechanics/Inclined_Plane/Inclined_Plane.html   (853 words)

Physics Physics students from all backgrounds are welcome; no previous experience with biological systems is necessary. Within biological membrane physics there is a focus on the functional roles of the lipid matrix in cell membranes, including membrane active peptides that form pores in membranes, membrane fusion, and protein transport through lipid bilayers. Work is underway at Rice on understanding the physics of biological and nanoscale systems, as well as inventing new systems and developing state-of-the-art techniques to study such systems. www.physics.rice.edu /bio.cfm   (319 words)

The Physics Classroom In Lesson 1 of this unit of the Physics Classroom, the manner in which light reflected off objects in order to allow us to see them was discussed. This principle was illustrated in class using a 5-foot plane mirror and a pair of large cylinders. Because of the person's position relative to the image position and to the extremities of the mirror, the person is unable to detect a ray of light reflecting to their eye as they sight at the image location. www.physicsclassroom.com /Class/refln/U13L2a.html   (1043 words)

MU-Physics: Experiment of the Month #16 The physical reason is that a charged particle moving parallel to a magnetic field experiences no magnetic force. Forster proposed using the orbit period of the electron in a magnetic field as the clock "tick." He used the relativistic momentum and the (otherwise) ordinary Newton's second law with the ordinary electric and magnetic forces to predict the behavior of the clock. For the yz plane, the magnitude of the momentum is constant. muweb.millersville.edu /~physics/exp.of.the.month/28   (955 words)

Altitude of a Spy Plane In order for these planes to fly over areas of land and not be detected, they must fly at a high altitude. The altitude of a spy plane is very important for it to stay out of reach of radar, so it won't be detected, and missiles. What started out with a regular plane that was man driven at 21,000 m is now replaced with planes that can fly at much higher speeds and altitude or without being flown by a pilot. hypertextbook.com /facts/2004/MichaelCalamera.shtml   (474 words)

Incline Plane The key to solving problems involving an incline plane is to resolve the force-vectors acting on the block (or blocks) into components that are either parallel or perpendicular to the surface of the incline plane. As long as a block stays in contact with the surface of the incline plane, the sum of the forces on that block that are perpendicular to the incline plane will be equal to zero and the motion of the block will be along the surface of the incline plane. The coefficient of friction between the block and the incline plane, the applied force, the angle of the incline plane, and the mass of the block can be varied. www.ac.wwu.edu /~vawter/PhysicsNet/Topics/Dynamics/InclinePlanePhys.html   (400 words)

The Plane and The Wind   (Site not responding. Last check: 2007-11-01) In the second case, the plane encounters a headwind (from the front) of 20 mi/hr. In the third case, the plane encounters a crosswind (from the side) of 20 mi/hr. The combined effect of the headwind and the plane speed provide a resultant velocity of 102 mi/hr (directed at an 11.3 degree angle east of south). www.glenbrook.k12.il.us /gbssci/phys/mmedia/vectors/plane.html   (244 words)

Physics A planed board, 600x75mm, hinged to the base at one end and provided with a pulley for the force cord at the other. A movable block enables the inclination of the plane to be varied. Linear scale fixed to edge of plane and vertical linear and 0 to 45° angular scales fixed to base with clamp, shaped for use as index. www.veetron.com /physics.asp   (307 words)

Physics News Update Central to the design of each plane is a two-layer "target region ": either a water droplet or polymer (lucite) on a small aluminum-coated area. To propel the plane, the target region is irradiated by a commercial-grade yttrium-aluminum-garnet (YAG) laser beam. Therefore, the plane works because of Newton's third law, in which an action (the aluminum plasma pushing the water or lucite) produces an equal and opposite reaction (a thrust on the plane). www.aip.org /enews/physnews/2002/split/594-2.html   (195 words)

Physics Limits to classical physics; wave mechanics and the Schrodinger equation; uncertainty principle; eigenvalues and eigenfunctions of simple systems including quantum well, potential barrier, harmonic oscillator, and hydrogen atom; matrix mechanics, Hilbert space and operator method; approximation methods; scattering theory; time-dependent perturbation theory; quantization of electromagnetic radiation; quantum theory of angular momentum, spin. Physical principles and operational characteristics of the most important semiconductor devices for advanced electronics systems that process data at rates higher than 1 Gb/s, or handle analog signals at frequencies above 1 GHz. Departments of physics at NJIT and Rutgers-Newark joint seminar on research and current topics in microelectronics, materials science, laser physics and other applied physics areas. www.njit.edu /v2/archivecatalog/graduate/96/72.html   (1721 words)

PhysOrgForum Science, Physics and Technology Discussion Forums -> Plane on conveyor... Will it ever take off? If the plane is moving along a conveyer belt that doesn't allow any displacement of the craft itself, then the air speed required to lift the plane isn't there. As the plane gains speed on the belt, the belt will cause a slight increase in drag from friction in the wheel bearings, but the load on the engine is largely due to the airflow around the plane. The plane most certainly will take off! Thrust from its engines acts on the surrounding air--has nothing to do with the ground or the belt the plane is on. forum.physorg.com /index.php?showtopic=2417&st=0   (935 words)

Physics_of_sound There is an equation-free description of the physics of sound in the section on music and sound, which includes animations, etc. The focus here is on sound waves in air. Within the physics section links generally lead to other places in the physics section, and not to the Glossary. The nonlinear acoustic equations, the equation of continuity, Euler's equation, and the pressure equation, are solved for the case of a plane wave. www.silcom.com /~aludwig/Physics/Main/Physics_of_sound.html   (867 words)

Physics Lesson Plans I'm Inclined to See (Exploration)- The purpose of this activity is to look at the motion of a sphere on an inclined plane and to discover basic relationships involving distance, time, speed (velocity), and acceleration. Periodic Motion: The Pendulum- To introduce the concept of periodic motion and relate it to the movement of a pendulum. Super-Ball Physics- To study the motion of a ball in the air, its collision with a hard surface, and subsequent bouncing. www.teach-nology.com /teachers/lesson_plans/science/physics   (870 words)

Syvum Physics Theory : Plane Mirrors & Reflection The point of incidence O is the point on the mirror surface where the incident ray strikes. When the rays of light coming from different directions meet at a point, then the collection of such rays is termed a convergent beam of light. When a large number of rays of light travel parallel to one another, then the collection of such rays is termed a parallel beam of light. www.syvum.com /cgi/online/serve.cgi/squizzes/physics/plane_mirrors.html   (526 words)

Ecliptic Plane's relation to Galactic Plane Another source I found stated that the orbital planes were 63 degrees apart. Astronomical theories predict that the plane of the solar system should lie in the plane of the galaxy. That's the ecliptic plane, blue because the fine particles which lie in the ecliptic plane (and give us the zodiacal light) are hot compared with the dust etc which gives rise to the galactic emission. www.physicsforums.com /showthread.php?t=9666   (797 words)

Carolina Biological: Physics: About Ferrofluids Set up the inclined plane at one end of the lab table so that the marble can roll down the inclined plane, across the tabletop, and off the far end of the table. Measure the angle of the inclined plane with the protractor. As Galileo performed a series of experiments with inclined planes, he noticed that as the angle of the inclined plane increased, the acceleration of the object rolling down it also increased. www.carolina.com /physics/projectiles.asp?print=yes   (1006 words)

Internet Resources for use in Physics classes GCSE Physics Tutorials -This material is suitable for GCSE Physics and Science students from Foundation to Higher Tier. Physics Question of the Week from The University of Maryland Department of Physics - Each week a new question will be posted and the answer for the previous Question of the Week will be shown. Inclined Plane - This Java applet demonstrates a motion on an inclined plane with constant velocity and the corresponding forces. www.internet4classrooms.com /physics.htm   (1812 words)

Cyberschools Column: Physics   (Site not responding. Last check: 2007-11-01) Ithaca High's Physics Zone, run by Steve Wirt, is a very good example of how a school can use the Web in the teaching of physics. Ithaca's "Physics Links" is a good place to start to find direct links to good physics sites and one of those links will take you straight to the Web site of Glenbrook South High School, where Tom Henderson and the Physics Department have created an extensive online tutorial. The "Physics Classroom" is essentially follow-up materials for those having difficulty understanding the course or catch-up materials for those who have been absent. www.netcomuk.co.uk /~media/physher.htm   (941 words)

How To Solve Physics Problems Between object B and the plane the coefficient of static friction is 0.56 and coefficient of kinetic friction is 0.25. Yes, because while friction opposes the motion in both cases, gravity opposes the motion in the former case and drives it in the latter. Furthermore, based on our choice of coordinate system as indicated on the first sketch, the acceleration is down the plane, as it must be. www.physics.hmc.edu /howto/problemsolving.html   (757 words)

SparkNotes: SAT Physics: Inclined Planes Suppose you place a 10 kg box on a frictionless 30º inclined plane and release your hold, allowing the box to slide to the ground, a horizontal distance of d meters and a vertical distance of h meters. The x-axis runs parallel to the plane, where downhill is the positive x direction, and the y-axis runs perpendicular to the plane, where up is the positive y direction. Note that the work done is independent of how steep the inclined plane is, and is only dependent on the object’s change in height when it slides down the plane. www.sparknotes.com /testprep/books/sat2/physics/chapter8section3.rhtml   (2009 words)

FAQ in high school physics The fast plane (the one going East) is subject to General Relativity (GR) corrections (a) because of its variable altitude in the Earth's gravitational field and (b) because of the centripital acceleration. The 2000 prize in Physics was awarded to Alferov, Kroemer and Kilby for contributions to the foundations of much of modern electronics and infomation technologies. The masses of the particles arise due to the effect that is very similar to the Meissner one because the physical vacuum is in the state similar to the state of a superconductor (Meissner state). www.phys.unsw.edu.au /~jw/FAQ.html   (18648 words)

Science - Physics, Federal Resources for Educational Excellence (FREE) It is maintained by Fermilab, the high-energy physics lab devoted to studying the universe—what it is made of and how it works. The Physical Sciences Resource Center offers hundreds of annotated lessons, simulations, and resources for teaching topics in the physical sciences, including astronomy, classical mechanics, electricity and magnetism, fluid mechanics, general physics, modern physics, optics, oscillations and waves, quantum physics, and thermodynamics and statistical mechanics. Physics offers a bird's-eye view of the great challenges in physics today. wdcrobcolp01.ed.gov /cfapps/free/displaysubject.cfm?sid=8&subid=75   (1032 words)

Physics Today June 2001 The plane along which failure occurs is called the fault plane and the point where failure initiates is called the focus. Both the shear heating and the elastohydrodynamic lubrication discussed in box 2 tend to promote slip motion as the earthquake becomes larger, that is, the slip growth rate depends nonlinearly on the slip itself. Lubrication may thus be one of the physical mechanisms that causes earthquakes to behave as complex systems. physicstoday.org /pt/vol-54/iss-6/p34.html   (3433 words)

AVault | PC | X-Plane Review   (Site not responding. Last check: 2007-11-01) The selection of different planes is an expansive and diverse grouping. While flying single engine Cessnas or Pipers is always a blast, some pilots may want to try out their wings with airliners that are more "high-tech." To this end, Laminar has included a nice selection of military planes, including VTOL jets like the Harrier. Were you to try and take off from a smaller community airstrip using a large 747 or other jumbo jet, you would quickly discover why certain planes have a strict minimum on runway length. www.avault.com /reviews/review_temp.asp?game=xplane   (485 words)

Modern Physics:Plane Waves - Wikibooks, collection of open-content textbooks A plane wave in two or three dimensions is like a sine wave in one dimension except that crests and troughs aren't points, but form lines (2-D) or planes (3-D) perpendicular to the direction of wave propagation. The large arrow is a vector called the wave vector, which defines (1) the direction of wave propagation by its orientation perpendicular to the wave fronts, and (2) the wavenumber by its length. The equation for the displacement associated with a plane sine wave in three dimensions at some instant in time is en.wikibooks.org /wiki/Modern_Physics:Plane_Waves   (632 words)

Star Wars: Blogs | Hangover's Brain Freeze | Physics Riddle: The Plane on a Conveyor Belt Physics Riddle: The Plane on a Conveyor Belt If a plane is sitting on a conveyor belt, and the belt will always move in the opposite direction of the plane, at the same speed, if the pilot throttles forward, does the plane have the ability to take off? A plane requires forward movement in order to generate lift. blogs.starwars.com /hangover_boy/17   (210 words)

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