------------------------------------------------- Speed Speed is defined as a measure of the distance an object travels in a given length of time. The average speed of an object can be determined from the equation below: Thus‚ if a car travels 100 meters in 5 seconds its average speed can be calculated as; Average speed = 100/5 = 20 meters per second Average speed is used to give the speed of an object over a given interval of time‚ if however the speed of an object is required for a particular moment then the instantaneous speed is used
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Final Project: Motor Speed Control Introduction and Objectives In this lab you will control the speed of a motor. Figure 1 shows the hardware setup‚ which is the same as for Week 1 of Lab 4. You will use the potentiometer on your evaluation board to set the desired speed of the motor‚ and you will control the speed through the PWM output of the HCS12. You will measure the speed of the motor using an input capture pin‚ and display the desired and actual speeds on the terminal.. 1. The Lab It is up
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To what extent is increased globalization a threat to national culture? Globalization is probably one of the most important political topics in the 21’st century‚ and also the most controversial situation of the world. Globalization refers to the worldwide movement of a business beyond domestic‚ national and international markets. Globalization has the effect of not only international trading‚ but also a cultural exchange. Some look at globalization as favorable and positive because it’s a key for
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IX Science (Motion) 1. If a body starts from rest‚ what can be said about the acceleration of body? (a) Positively accelerated (c) Uniform accelerated (b) Negative accelerated (d) None of the above [1] 2. What does slope of position time graph give? (a) speed (b) acceleration (c) uniform speed [1] (d) Both (a) and (c) depending upon the type of graph. 3. When a body moves uniformly along the circle‚ then:(a) its velocity changes but speed remains the same (b) its speed changes but velocity
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Increased life expectancy With the rapid development of the economy‚ people’s life quality has become better. Compared with the past‚ life expectancy is linear growth now. Take Japan as an example‚ men are 67.74 years and females are 72.92 years in 1965‚ but in 1995 average life expectancy of men was 76.57 and for women it was 82.98 years. According to some organizations it is predicted that the growth of the human life expectancy will increase 0.86 years per decade between 2000-2080. This includes
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Heat‚ Temperature‚ and Phase Changes Assessment Practice Answer This graph shows what happens to the temperature of the water‚ while it was boiling in a kettle‚ as heat energy was being added to it and what the water was doing will it began to warm and change states. During a phase change‚ the temperature remains mainly constant. This occurs because the heat energy is used to break the bonds between the ice molecules as they turn into a liquid phase. It is possible to constantly
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Chapter 15 & 16: Temperature‚ Heat & Heat Transfer Temperature is a measure of the average (not total) translational kinetic energy. ●ex: there is 2x as much total molecular kinetic energy in a 2L of boiling water than one‚ but the temp of the two volumes are the same (average of translational kinetic energy per molecule is the same in each → Internal Energy- the total of all molecular energies: kinetic+potential (SAME TEMP) ● Ex: apply a flame to 1L h2o for a certain time and its temp rises
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02 December 2012 1. Title and Author 1. The Effect of Extreme Temperatures on the Rate of Photosynthesis 2. Jeffrey Xia 2. Abstract A previous lab in which we conducted‚ tested whether or not the light intensity had an effect on the rate of photosynthesis. We concluded that light intensity did possess an effect on the rate of photosynthesis – the closer the experimental plant units were to the light source‚ the more experimental plant units exhibited the effect of gas exchange in photosynthesis
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Dispersion and the speed of light “So far as problems involving light are concerned‚ the electrons (in atoms) behave as though they were held by springs”.Feynman “In a microscopic but otherwise classical analysis‚ the electric field in electromagnetic radiation accelerates electrons held by springs in the atoms of a piece of glass‚ and these accelerated electrons re-radiate in all directions. The observed light is the superposition of the electric (and magnetic) fields of the incoming
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Problem Statement Which food gives the most accurate information about the speed of light? Hypothesis I think that the eggs will give me a more accurate result. Procedures: 1. First‚ place the (marshmallows‚ eggs and buttered bread) in the casserole dish‚ completely covering dish. 2. Next‚ put the dish of the (marshmallows eggs and buttered bread) in the microwave and cook on low heat. 3. Heat the food (marshmallows‚ eggs and buttered bread) until it begins to create the hotspots
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