Plastic Bags hanging from the branches‚ flying in the air‚ stuck in corners racing along with the vehicles on the road are – as we all can see – PLASTIC BAGS. This wonder material of the 20th century has invaded every aspect of our lives; it is all over the place messing up the streets and parks‚ clogging up the drains and gutters. These plastic bags or shoppers as they are commonly called are available in all sizes‚ shapes and colors‚ and because of their lightweight‚ flexibility and low cost they
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Extreme sports are not a hazard and should NOT be banned. There are many reasons that extreme sports should NOT be banned. Firstly‚ extreme sports can increase self esteem and confidence. Secondly‚ extreme sports challenge the person and increase their skill. And last but not least‚ extreme sport can add to a persons experience‚ determination and courage. To begin‚ extreme sports should not be banned because it can increase a persons self esteem and confidence. Some people like extreme sports very
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things ever became this way‚ but for younger mobile phone users‚ this is the norm and all they’ve ever known. Cell phones‚ texting and smart phone application are here to stay and have changed society in important ways‚ for better and worse. When a cell phone goes off in a classroom or at a concert‚ we are irritated‚ but at least our lives are not endangered. When we are on the road‚ however‚ irresponsible cell phone users are more than irritating: They are putting our lives at risk. Many of us have witnessed
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Question 1 | 1.61 points | Save | | You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude? | | | | | | | | The elevator is accelerating downwards. | | | The elevator is moving at a constant velocity downwards. | | | The elevator is moving at a constant velocity upwards. | | | Your diet is working. | | | The elevator is accelerating upwards. | | | | | | Question 2 | 1.61 points | Save | | Tidal
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Nanotechnology holds huge promise in a wide range of applications but there are potential risks. Discuss. “Nanotechnology is the science of creating or modifying materials at the atomic and molecular level to develop new or enhanced materials and products. Nano-materials are one-billionth of a meter in size‚ a thousand times smaller than a red blood cell.”[i] One of the common words that are being referenced these days when we discuss about the world developing into a more advanced is nanotechnology
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Potential Energy Potential Energy is a type of energy that does not involve motion. It is the energy that is stored up. The more work done to change an object’s position or shape‚ the more potential energy it has. For example‚ a person on a ladder has more potential energy than a person on the ground because they have done more work to get up there. Kinetic Energy Kinetic Energy is the energy of motion. The more work an object has done‚ the more kinetic energy it has. the amount of kinetic
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RISK ASSESSMENTS We are all required to identify risks and minimise these whenever we undertake a task. Here are some sample risk assessments presented in a suitable manner for your individual project. Physical HazardIdentify the hazards | Risk (Harm) Determine the risks associated with the hazard | Risk Control MeasuresDetermine control measures required to eliminate or minimise the risk using ‘hierarchy of control measures’. | | | | Use of Bunsen burner | Gas leakage‚ burning of
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MGH Evoked Potential Normative Values Pattern Shift Visual Evoked Potentials P 100 Latency (msec) Inter-eye difference (msec) P 100 Amplitude (µV) P 100 Amplitude % difference Mean 102.3 1.3 10.1 85.5% SD 5.1 2 4.2 10.50% Mean + 3 SD 117.6 7.3 N/A Notes (Smallest/Largest) 53.9% X 100 Brainstem Auditory Evoked Potentials Latencies (msec) I II III IV V VI Inter-wave latencies (msec) I-III I-V III-IV III-V IV-V V-VI Mean 1.7 2.8 3.9 5.1 5.7 7.3 SD 0.15 0.17 0.19 0.24
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examples of work done=force x distance What is work? Work in physics is the transfer of energy; work is done on an object when an applied force moves it through a distance. The link between work and energy is work done equals energy transferred. The units for the two are also the same (joules). E.g. 500J of work = 500J of kinetic energy. Work is calculated with the formula: work done=force x distance moved For example‚ if a force of 10 newton (F = 10 N) acts along point that travels 2 meters
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Human Environmental Hazards HUMAN ENVIROMENTAL HAZORDS 2 Human Environmental Hazards The four major categories of human environmental hazards are Cultural Hazards‚ Biological Hazards‚ Physical Hazards‚ and Chemical Hazards. Biological hazards are diseases and viruses. Physical hazards are the result of natural disasters
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