Electricity has become the main sources of domestic energy in Australia over the last 200 years and played an important role in today’s society‚ industry . In the early time when the British started to settle in Australia‚ firewood was the most important fuel. In 1831‚ Michael Faraday put forward the electromagnetic induction‚ which led to the development of electric generators and made the large amount of electricity supply become possible. After 1879 when the perfect light globe was designed
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Objective: To study the relationships between position‚ velocity‚ and time‚ with acceleration held constant‚ of an object moving in one-dimensional motion with minimum friction. A motion sensor will be used to measure various aspects of vector quantities. Description: An Air Track is positioned along the edge of the table. It is a long straight metal beam with many small holes that are roughly each 2mm in diameter. It is positioned at an angle to allow the gliders to glide down the slope
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Experiment 10 – Enzymes Enzymes are proteins that act as catalysts for biological reactions. Enzymes‚ like all catalysts‚ speed up reactions without being used up themselves. They do this by lowering the activation energy of a reaction. All biochemical reactions are catalyzed by enzymes. Since enzymes are proteins‚ they can be denatured in a variety of ways‚ so they are most active under mild conditions. Most enzymes have optimum activity at a neutral pH and at body temperature. Enzymes are
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Ideas about the solar system Our understanding of the solar system has changed over many centuries. Scientists such as Ptolemy‚ Copernicus and Galileo added their ideas to our changing understanding. We observe the universe using a variety of equipment‚ from telescopes to orbiters and landers. Models of the solar system The planets and the Sun orbit the Earth in Ptolemy’s model. Our understanding of the universe has changed over time. Different civilisations have created different models to
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Phil Yu Electrostatics Lab Data Chart Part 1: Trial | Material | Material | Charge (+ or -) | q (nC) | 1 | Glass | Fur | + | 3.108 | 2 | Clear Plastic | Fur | + | 45.07 | 3 | Yellow Plastic | Fur | - | 81.57 | 4 | Glass | Silk | + | 1.979 | 5 | Clear Plastic | Silk | + | 19.60 | 6 | Yellow Plastic | Silk | - | 75.49 | 7 | Glass | Green Cloth | + | 2.914 | 8 | Clear Plastic | Green Cloth | + | 31.09 | 9 | Yellow Plastic | Green Cloth | - | 90.30 | Data Chart Part 2:
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4W Experiment to Verify Snell’s Law of Refraction and to Estimate the Speed of Light inside a Transparent Plastic Block 1. Preparation: a) Read about refraction of waves and Snell’s Law. b) Find the relation between the refractive index of a medium and the speed of light in that medium. c) Read about total internal reflection; especially the definition of the “critical angle of incidence”. 2. Using the special apparatus provided‚ measure the angles of refraction corresponding to a wide range of
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Q5 Should Ping An try to go global again? If so‚ what should it market entry strategy be? As the global economic crisis abated in 2010‚ the current economic condition in most countries especially in the emerging market sector has been more than conducive for Ping An to go global and penetrate into these market. However‚ it must be noted that the European Debt Crisis is still going on in most of the European countries‚ and thus‚ it might be more favorable for Ping An to focus on the Asia-Pacific
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1 Visit the following URL: What is absolute zero? A According to this website‚ what is the definition of "absolute zero"? Ans: Absolute Zero‚ is when the molecules of the object can no longer oscillate/shake‚ due to the temperature being too cold‚ that kinetic energy Is too weak to do anything. The time when the oscalation is slowed to the point it can no longer be slowed down‚ that is when it has reached “absolute zero”‚ but even then‚ oscalation can never really be put to a stop. B Why is the
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PHYS 101-2 STUDY GUIDE 1. The study of stationary or resting charges. ____________________________ 2. ________________________ is a connection made to Earth. 3. ________________________ is the process by which electrons are added or removed from a body. 4. List the three modes of electrification. __________________________________________________________________________________________________________________________________________________________________________________________
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Student: (Be sure to look over all your notes and be sure to know the following things) 1. Define Temperature‚ thermal energy and heat. 2. A 1.00 x 10²g mass of tungsten at 100°C is placed in 2.00 x 10²g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Calculate the specific heat of tungsten. Cw = 4180 J/kg°C C= 171 J/kgOC 3. A certain metal has a specific heat of 400 J / kg oC. It absorbs 8000 J of thermal energy which causes its temperature to raise 10oC. How much
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