and kinetic friction for a particular block and track. * Use a Motion Detector to independently measure the coefficient of kinetic friction and compare it to the previously measured value. * Determine if the coefficient of kinetic friction depends on weight. Materials:- * Computer - String * Vernier computer interface - Block of wood with hook * Logger Pro - Balance or scale * Vernier Motion Detector - mass set * Vernier Force Sensor Data Table:- Part
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I started vacuuming‚ that took me at least 2 hours because I ended up vacuuming the entire house. I was sooo tired when I finished‚ I had 6 hours left before Jennifer Lawrence arrived‚ what should I do to impress her? I mean besides talking about physics? I decided I’d make some coffee for the two of us‚ while all of this happens I remember that the A/C turns on every 30 minutes for 30 minutes‚ so it is on for 12 hours a day‚ then I remember to wash my dishes‚ so I put them in the dishwasher‚ which
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1. A book is at rest on a tabletop. A free-body diagram for this situation looks like this: Return to Questions Return to Info on Free-body diagrams Return to on-line Force Description List 2. A girl is suspended motionless from the ceiling by two ropes. A free-body diagram for this situation looks like this: Return to Questions Return to Info on Free-body diagrams Return to on-line Force Description List 3. An egg is free-falling from a nest in a tree. Neglect air resistance. A
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Motion in 2D Simulation Go to HYPERLINK "http://phet.colorado.edu/simulations/sims.php?sim=Motion_in_2D" http://phet.colorado.edu/simulations/sims.php?sim=Motion_in_2D and click on Run Now. 1) Once the simulation opens‚ click on ‘Show Both’ for Velocity and Acceleration at the top of the page. Now click and drag the red ball around the screen. Make 3 observations about the blue and green arrows (also called vectors) as you drag the ball around. When the ball is stopped there isn’t any changes
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label the technologies on the photograph ii) Investigate three different technologies that have been implemented in cars or along roads to avoid or reduce the effect of collisions. In your investigation explain how the technology works in terms of physics laws and theories. 1. Crumple zone The purpose of a crumple zone is to increase the amount of time it takes for a car to come to a stop after being hit by an object. Crumple zones cause the force to be spread out over a long period of
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HSC Physics Notes - Space 9.2 - 1. The Earth has a gravitational field that exerts a force both on it and around it 1. define weight as the force on an object to a gravitational field Mass is the measure of how heavy an object it. Every object has a mass which is static and does not change with any force exerted on it or from it. However‚ weight is the force which is exerted upon an object when it comes into contact with or nearby a gravitational field of some strength. Weight is a force ஃ a vector
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8th physics light reflection refraction eyes defect and dispersion The ray of light which falls on the mirror surface is called incident ray. The point at which the incident ray strikes the mirror is called the point of incidence. The ray of light which is sent back by the mirror is called the reflected ray. The ‘normal’ is a line drawn at right angles to the mirror surface at the point of incidence. The angle between incident ray and normal is called the angle of incidence. The angle between
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The Pit and the Pendulum is a book written by Edgar Allen Poe in 1842. Years later‚ in 1961‚ a movie was made. Directed by Roger Corman‚ the film is a lot different than the movie‚ though it does have a few similarities. One of the few similarities is the pendulum sequence. When Francis is strapped down to the “bed‚” the pendulum comes inches closer and closer‚ slowly‚ as in the book. Right as it’s about to kill him‚ he’s saved. Another similarity‚ though minor‚ is the involvement of a pit. A
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A superconductor is a metallic alloy that conducts electricity without resistance‚ below a certain temperature. Once in motion‚ an electrical current will flow in a closed loop within a superconducting material. This is the closest to scientists of a perpetual motion machine. In 1911‚ Heike Kamerlingh Onnes first observed superconductivity. He used mercury and cooled to four degrees Kelvin. When the mercury reached that temperature‚ the resistance disappeared. That meant that the electrical current
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point of views for the ADA‚ Ruth Colker in her book‚ "The Disability Pendulum‚”shows her disappointment for the disability rights community from the ADA implementation in first year. She traces the effectiveness of the ADA‚ and show how and why this key piece of civil rights legislation has fallen far short of the "high hopes and aspirations" of the disabled community and their advocates. She uses the metaphor of a swinging pendulum to symbolize shifting attitudes toward disability rights and the disabled
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