Thursday, January 9, 2020

Physics Form 4 Chapter 3 - 4802 Words

Discuss your physics questions online at 3 FORCES AND PRESSURE 3.1 UNDERSTANDING PRESSURE Pressure is force per unit area Pressure = Force Area P= F A 1. Define Pressure 2. State pressure’s formula 3. State relationship between pressure and area. 4. Describe applications involving High Pressure Increasing the pressure by reducing the area A sharp knife has a very The studs on a football small surface area on its boot have only a small cutting edge so that high area of contact with the pressure can be exerted ground. The pressure to cut the meat. under the studs is high enough for them to sink into the ground, which gives extra grip. The SI unit : Nm-2 = Pascal = Pa The pressure of a given force increases as the†¦show more content†¦1. Dam holds water at high altitude. The wall of the dam has to be thicker at the base. Explain. The wall of a dam is much thicker at the bottom than at the top because it must withstand the increased lateral pressure in depths of the water. 2. Water is stored in water tank at higher level. Why? Normally a water tank is placed at higher level so as to supply water at greater pressure. 40 Discuss your physics questions online at 3. Submarine is built with thick wall. Explain. Submarine is built with thick wall so as to withstand enormous pressure at greater depth. 4. A patient receiving intravenous drips of a certain fluid from a bottle. In order for the fluid to flow into the vein, the bottle must be placed at a height above the injection site. Why? The liquid solution is at a higher pressure so it has sufficient pressure to flow into the veins of the patient. 3.3 UNDERSTANDING GAS PRESSURE AND ATMOSPHERIC PRESSURE Explain gas pressure Gas pressure is the force per unit area exerted by the gas molecules as they collide with the walls of their container. Explain †¢ Atmospheric pressure is the pressure caused by the atmospheric weight of the air above us. pressure . †¢ Atmospheric pressure acts equally in all directions. †¢ Atmospheric pressure varies with the height of the object above sea level. It decreases with the altitude or the height above sea level. At higher altitudes,Show MoreRelatedQuantum Neural Network Essay1014 Words   |  5 PagesChapter 1 Quantum Neural Network 1.1 Introduction and Background The eld of arti cial neural networks (ANNs) draws its inspiration from the working of human brain and the way brain processes information. An ANN is a directed graph with highly interconnected nodes called neurons.Each edge of the graph has a weight associated with it to model the synaptic eciency. The training process involves updating the weights of the network in such a way that the network learns to solve the problemRead MoreThe Physics, Meaning, Lectures On Nature1712 Words   |  7 PagesThe physics, meaning â€Å"lectures on nature† written by Aristotle was a base towards Western science and philosophy genre books. His passion towards the topic of nature had led him to become more curious on general issues such as motion, causation, place and time. In Physics II.3 Aristotle’s provides a general understanding of the four causes, these four causes seem to apply to everything that would require an explanation. He first introduces his theory of the four causes in Book II, Chapter 3 whereRead MoreQuestions On Mathematics And Physics1331 Words   |  6 PagesLiu 1 Hilary Liu Dr. Goldader Honors Physics September 8, 2014 Chapter 1 Homework Answers 1) Why is mathematics important to science, and especially to physics? 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The main elements of physics found in basketball that I will be analysingRead MoreLength Mass and Density Lab Report1623 Words   |  7 PagesDetermination of Length, Mass, and Density Table of Contents 1 – Introduction †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦........†¦. Page 3 2 – Theory †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦...... Page 3 3 – Experimental Procedure and Results †¦...†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..†¦. Page 6 4 – Discussion †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.....†¦.†¦Ã¢â‚¬ ¦ Page 9 5 – Conclusion †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.....†¦Ã¢â‚¬ ¦.... Page 9 6 – Bibliography †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦......†¦ Page 10 1- Introduction The purpose of this experiment is to learn how use a variety of tools that will aid in the gatheringRead MoreCase Study Notes : The Case Of The Headless Corpse1576 Words   |  7 Pagesplease read:1. The Scientific Method. (availableas pdf on course BB)2. â€Å"The Case of the Headless Corpse† (This is Chapter 5 in Bass and Jefferson’s Death’s Acre; available as pdf on course BB); 3. Read/ view the materials in the online resources for Chapter 1 in our text (Jurmain et al), particularly the sections on critical thinkingand the Scientific Method.Answer the following questions. 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He writes, â€Å"The form or the thing as havingRead More Albert Einstien Essay905 Words   |  4 Pageshigh school, Albert Einstein enrolled in Polytechnic Institute in Zurich, Switzerland when he was seventeen years of age. Albert studied mathematics and physics which the professor did not like. However, Albert continued to study very hard while he attended college. In 1900, Albert graduated from college, and was asked to join the physic department but Albert denied the request. After college, Albert moved to Switzerland where he became a citizen. He stayed in Switzerland for three yearsRead MoreProperties of Light Essay1256 Words   |  6 PagesDanielle Silverstein PHY 101 Section 10497 March 4, 2013 Light up this World Purpose: In this lab experiment, LED lights will be used to show how when EM radiation is absorbed, the energy is converted to heat. A drop of isopropyl alcohol will absorb light energy of different colors, and the evaporation rate of the alcohol will be measured. The key to this lab is the evaporation rate is directly related to the energy of the light shining on the drop. Materials: * * LEDs

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