0V Activity 2-4: 1. What did you observe when the glass rod contacted the nerve? An action potential is generated as I touch the rod to the nerve. 2. How does this tracing compare with the other tracings you have generated? The tracing is identical to the tracing generated at the threshold voltage. 3. What did you observe when the heated glass rod contacted the nerve? An action potential is generated when you touch the heated rod to the nerve‚ through a thermal stimulus. 4. How does this
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rearrange themselves. In other words‚ those charges attracted to the charged object move towards the charged object and those charges repelled move away. This effect is known as polarization. 2. What happens when you bring a charged object (ebonite rod) close to a neutral or uncharged object (water)? A neutral stream of water bends towards a charged plastic comb. There is an attractive force between a charged object and a neutral (uncharged) object. Any charged object (positively or negatively charged)
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of running‚ life giving‚ water is frightening to them so a good shepherd must dam up a small section of the stream to create standing or "still" water for the sheep to be able to approach the stream and drink. The shepherd’s tools were his rod and staff. The rod was a straight wooden stick with a knob at the end and was carried in the shepherd’s belt.
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however I noticed that some of the crystals stuck to the stirring rod this could decrease the ending mass too much. Additionally there was a soot buildup on the bottom of the crucible however these are minor and wouldn’t make much of a difference. To be precise I used a top hand balance that measures to two decimal places. Improvements: In order to solve the issue of the crystals sticking to the stirring rod could be solved by adding the rod to the scale and measure it with the crucible both before and
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marijuana should be a legally taxed substance in the United States. In a world that has hated marijuana since it was outlawed in 1937‚ the times are finally starting to change. (A NormL Life‚ Rod Pitman) Cannabis is still federally illegal and is considered a schedule 1 drug by the federal government. (A NormL Life‚ Rod Pitman) This means that marijuana has a high potential for dependency and has no accepted medical use. This means it is in the same category as LSD‚ PCP‚ and Heroin. (How weed won the west
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Mechanical Stimulation 1. When the glass rod is touching the nerve‚ what do you see on the oscilloscope screen? When the glass rod touches the nerve an action potential occurs 2. How does this tracing compare with the other tracings you have generated? With the glass rod touching the nerve the tracing matches the tracing at 3.0V Activity 3: Thermal Stimulation 1. What happens when the heated rod touches the nerve? When the heated glass rod touched the nerve and action potential occurs
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2. Objectives The objectives of this experiment are to observe the keeping quality of some food products‚ study the various simple methods of moisture determinations using different drying method. And determine the water activity in some food samples such as biscuits‚ bread‚ flour and instant noodles by using water activity measurement machine. 3. Theory To determine the moisture content in the food‚ methods such as open dish method and infrared balance method are used. 3.1 Hypothesis
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Steel Wool * Porcelain crucible and lid * Bunsen Burner * Retort Stand * Ring Stand and Clamp * Clay Triangle * Crucible Tongs * Glass Stirring Rod * Distilled Water Calculations + Observation: Please see the back of the report. Discussion: B) The fact that magnesium oxide was formed‚ which is a new substance‚ proved that a chemical reaction had taken
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compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated cylinder 1 50mL beaker 1 100 mL beaker 1 glass stir rod 1 ring stand 1 clamp 1 250mL beaker Distilled water pH paper reagents: 10mL 6M acetic acid 10g solid sodium acetate 25mL 1M naOH NH3 NH4Cl 0.1 solution Safety: Acetuc acid‚ HCl and NaOH are corrosive. They attact the skin and cause
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Task 1: (P1) Describe the purpose and application of three different types of lubricant: What is Lubrication: Lubrication is a process or technique when a component is having been made smooth and slippery by the application of Lubricant. What is Lubricant: A lubricant is a substance which applies between two moving surfaces to reduce friction between them. E.g. Motor oil‚ Greases‚ Graphite‚ Glasses. Three different types of lubricant and the purpose they serve: Glasses: Glass is used as a Lubricant
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