One disadvantage is the concept of this low cost lightweight laptop has a lack of awareness of how the laptop would educate children and market problem. OLPC’s mission is to help children for learning and developing knowledge throughout the low cost laptop and it calls an education project (LOPC mission). The point is that OLPC needs to educate foreign countries and their governments of education about the feature of this laptop works‚ and most importantly‚ what are the key essential techniques of
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http://whatis.techtarget.com/definition/Internet-of-Things The Internet of Things (IoT) is a scenario in which objects‚ animals or people are provided with unique identifiers and the ability to automatically transfer data over a network without requiring human-to-human or human-to-computer interaction. IoT has evolved from the convergence of wireless technologies‚ micro-electromechanical systems (MEMS) and the Internet. A thing‚ in the Internet of Things‚ can be a person with a heart monitor
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bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed with calcium chloride was added to one of the heads of the claisen adapter. A rubber septum was then added to the other head
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measuring cylinder • Stirring rod • Stop watch • Bunsen burner • Piece of Magnesium • Sand paper • Permanent marker 2.2 Diagram / Photograph 2.3 Procedure Firstly an aim and hypothesis were written up‚ then 2mm of water was poured into the measuring cylinder and that was tipped into the micro tube. Then The 2mm line was labelled with the permanent market. That water was then discarded. After this the piece of magnesium was cleaned with sandpaper and bent into shape. The acid was then poured
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Lab: investigating hooked law with springs Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle Pre lab predictions: We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like Data: Spring #1: y = 8.2941x + 0.0685 This table represents the different distances that
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of the specialized underlying structures of these life-forms. In order for us to appreciate these special adaptation‚ we first need to know how a typical plant or an animal cell organelle behaves in different water and solute concentrations. In this lab‚ we will determine the effects of hypertonic‚ isotonic and hypotonic solutions on plant and animal cells. In general when an animals cell’s placed in hypertonic solution it shrivels; a plant cell on the other hand undergoes plasmolysis. When an animal
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Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper (5 cm x 10 cm) - silver nitarate - birthday
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Lab Report for Chemical Changes and Conservation of Mass Lab Previous to the reaction‚ the magnesium appeared to be a solid‚ white‚ black‚ and grey substance with many small dark particles within the substance. The hydrochloric acid was a clear liquid that looked like water It weighed 42.2 grams in total. During the reaction‚ the two substances produced bubbles‚ creating smoke and became warm with a smell that is irritating to the human nose. After the reaction‚ it appeared to be a clear‚ bubbly
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contribution to chemistry. Research Question -Magnesium reacts with hydrochloric acid. If you increase the amount of magnesium added to hydrochloric acid will it change the mass of the initial product? Hypothesis -If you increase the amount of magnesium added to hydrochloric acid then it will increase the amount of mass of the initial product. Variables -Independent Variable: amount of magnesium. Dependent Variable: the mass of the product of magnesium added to hydrochloric acid. Control:
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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