Throughout the experiment‚ there were 3 significant error I made. Firstly‚ at first when I conduct my experiment‚ I measured 10g of ascorbic acid powder and mix it within 1 litre of water. I believed that by having the solution prepared before putting in the d-block elements would save time overall. Unfortunately‚ the data was all over the place‚ this is because the later I conduct the experiment‚ there is a higher chance of oxidation occur in the ascorbic acid solution as it have a direct contact
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Project Design Plan This experiment is to test the theory that the temperature of water affects the duration of time it takes to water to reach freezing? Hot water freezing faster than cold has been observed for many centuries. The earliest known reference to this effect is by Aristotle‚ who wrote: "The fact that water has previously been warmed contributes to its freezing quickly; for so it cools sooner. Hence many people‚ when they want to cool hot water quickly‚ begin by putting it in the
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acting in a plane of symmetric. If loads do not act in plane of symmetry‚ this leads to deflection in a plane perpendicular to the loading plane as well as in the loading plane. This coupling does not occur if the loading is in principal plane. The experiment was conducted to investigate the deflections of the tip of a cantilever when loaded transversely in directions not coinciding with the principal axes of the cross section‚ and also to determine: 1. The directions and orientations of the principal
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in order to prove the effect of the test variable by comparing conditioned and unconditioned groups. A conditioned group is a group who receives the independent variable. An unconditioned group does not receive the independent variable. In this experiment we are testing the effects of cell phone usage on driving skills. In this case‚ the control group gives us an example of what happens when drivers are focusing on the road. The results from the control group will show us what happens when the driver
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Controlled Experiment to Investigate the Correlation between Keystroke Latency and Programming Performance Junisilver Taij This report is submitted as partial fulfilment of the requirements for the Honours Programme of the School of Computer Science and Software Engineering‚ The University of Western Australia‚ 2005 Abstract Programming is a complicated skill to master‚ and learning to program is complex. The difficulty of first year students studying computer science is that they generally
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hypothesis. Understand how to design an experiment that tests a hypothesis. Explain the elements of a well-designed experiment‚ including controlling the variables. Understand how taking data and analyzing it is important in a scientific method. Understand the difference between qualitative data and quantitative data. Describe how forming conclusions and communicating results are important in a scientific method. Understand that sometimes new hypotheses or new experiments need to be made. MAIN IDEAS/QUESTIONS
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variable that is changing in the experiment. It is sometimes called the manipulated variable. There can only be one independent variable‚ as any more than one can lead to unfair results. A Dependent Variable is the variable that is getting recorded‚ made by the changes of the independent variable. A Controlled Variable is the variables that you must keep constant during the test‚ to ensure the fairness of the test. EXAMPLE An example is an experiment looking at the growth of trees in
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Composition of Concurrent Forces Abstract— The experiment aims to show the relationship of different forces acting at the same time by using different variables namely‚ the equilibrant force‚ the resultant‚ and the given forces Fa and Fb. The equilibrant force is the force that establishes equilibrium while the resultant is the addition of the given forces and is also the opposite of the equilibrant. The objective of the experiment is to determine the resultant of two forces experimentally‚ to
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of the Western Electric Company (1924-32) as a basis to test his theories. These experiments were dubbed the Hawthorne Studies. It consisted of four main stages:- The illumination experiments The relay assembly experiments The interviewing programme The bank wiring observation room The illumination experiments focused on the effect of different intensity of lighting on the productivity. These experiments were however inconclusive‚ as the experimental groups production varied with no relation
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Experimental design is a research method in which researcher tries to examine causal effects by manipulating independent variable under controlled settings and measures whether it produces any change to the dependent variable. In an experiment experimenter deliberately imposes a treatment on a group of objects or subjects in the interest of observing the response. This differs from an observational study‚ which involves collecting and analyzing data without changing existing conditions. In an experimental
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