Abstract The glass transition temperature of polymethylmethacrylate ( PMMA‚ Perspex) is measured using static and dynamic method while the glass transition temperature of rubber of different size is measured using only dynamic method. The glass transition temperature Tg of Perspex is found to be 90°C using the static method and 160°c using the dynamic method. On the other hand‚ the Tg of rubber is found to be -30°C. Introduction Perspex is a type of amorphous polymer and has the following
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Laboratory Report : Experiment One Title: Determination of the acceleration due to gravity with a simple pendulum Introduction and Theory: A simple pendulum performs simple harmonic motion‚ i.e. its periodic motion is defined by an acceleration that is proportional to its displacement and directed towards the centre of motion. It can be shown that the period T of the swinging pendulum is proportional to the square root of the length l of the pendulum: T2= (4π2l)/g with T the period in
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interior of the cell from the exterior and regulate the movement of substances in and out of the cell. Diffusion is how substances more in and out of the cell. There are several types of diffusion‚ but for the purposes of this lab‚ we will be focused on simple and osmosis. Simple diffusion and osmosis are vital for the diffusion of water and maintaining homeostasis. Homeostasis is the ability to maintain equilibrium and keep the organism alive. For example‚ if a cell is placed in a hypotonic solution
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Simple Sugars Lab Emerson: Hallie: Background: Benedicts solution is a chemical solution that changes color in the presence of glucose and other reducing sugars. It is a mixture of sodium or potassium citrate‚ sodium carbonate‚ and copper sulfate. It changes from its normal blue color to an orange‚ red‚ or yellow. it changes based on the amount of sugar used. "Benedicts Solution." Definition from BiologyOnline.org. N.p.‚ n.d. Web. 16 Jan. 2015. http://www.biologyonline.org/dictionary/Benedicts_solution
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------------------------------------------------- Pendulum From Wikipedia‚ the free encyclopedia This article is about pendulums. For other uses‚ see Pendulum (disambiguation). "Simple gravity pendulum" model assumes no friction or air resistance. | An animation of a pendulum showing the velocity and acceleration vectors (v and a). | | A pendulum is a weight suspended from a pivot so that it can swing freely.[1] When a pendulum is displaced from its restingequilibrium position‚ it is subject
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The pendulum shows elastic collision and conserved momentum. In this set up‚ no momentum is actually lost. Ball 0 just transfers its momentum to stationary ball 1 which it collides with(head-on collision) so ball 0 is put to stop then ball 1 collides with ball 2 causing ball 1 to stop and transfer its momentum to ball 2 and so on until the momentum gets transferred to ball 4 then ball 3 collides with ball 2 and the cycle continues. Thoughts on KPUP Grading System As we all know
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“The Pit and the Pendulum” Commentary Edgar Allen Poe’s “The Pit and the Pendulum”‚ is a short story of the struggled of a prisoner who has been sentenced to death‚ and placed in a dungeon. The narrator‚ who is the prisoner‚ realizes that the dungeon he is placed in is known as the Inquisition. He encounters death multiple times throughout his time in the dungeon. He nearly falls into a large pit‚ almost gets scythed by a pendulum‚ and gets pushed to the brink of the pit by burning walls‚ but merely
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This article is about pendulums. For the band‚ see Pendulum (band). For other uses‚ see Pendulum (disambiguation). "Simple gravity pendulum" assumes no air resistance and no friction. | An animation of a pendulum showing the velocity and acceleration vectors (v and A). | | A pendulum is a weight suspended from a pivot so that it can swing freely.[1] When a pendulum is displaced from its resting equilibrium position‚ it is subject to a restoring force due to gravity that will accelerate it
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Abstract This experiment was carried out to perform staining methods on microbes‚ explain the mechanisms of staining‚ namely‚ simple staining‚ and learn how to use the microscope. The experiment setting was kept as sterile as possible when conducting the experiment. The microbes under the microscope were drawn out and labelled. In conclusion‚ different staining techniques are used to determine the presence of certain exterior structures of the bacteria like the cell envelope or just to identify
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Using a simple pendulum to find the acceleration due to gravity/g Task 1 Aim: To find the acceleration due to gravity/g Objective: To find the relationship between the length of simple pendulum and the period oscillation Hypothesis: The longer the length of the simple pendulum‚ the longer the period of oscillation will take. Variables: a) Independent- the length of the pendulum; b) Dependent- the time it takes for 20 oscillations; c) Control - the mass of pendulum. Task 2 References
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