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A personal insight into nuclear fusion For a fusion reaction to take place, the nuclei, which are positively charged, must have enough kinetic energy to overcome their electrostatic force of repulsion. This can occur either when one nucleus is accelerated to high energies by an accelerating device, or when the energies of both nuclei are […]

Biofuels is a renewable source of primary energy. Biofuels comprise of 80% of the total renewable energy (Tokar et. al 2007). Biofuels which are derived from crops offer a perfect sustainable solution (Endersby, 2007). For example, forestland and agricultural land in the US alone are able to supply biofuels sufficient for one third of the […]

We also took all measurements and calculations to 2 decimal places where possible, which we thought to be a suitable accuracy for school laboratory experiments and for finding an accurate relationship. This also was suited to the equipment we chose to use. Apparatus Below is a lost op apparatus used in the experiment:  Measuring cylinder […]

This should give me a straight line in the form In which y=Power recorded, m=1/R, x=V2, c=O since when V=0 P=0 I have also plotted a how the power should vary with respect to the voltage squared for use as a comparison. (see next page) Analysis of the graphs: The power recorded is roughly equal […]

When a substance is heated, the particles move faster. When the particles are moving faster they will travel at greater distances which will involve more collisions. This will increase the rate of reaction. Concentration The more concentrated the reactants are the greater the rate of reaction. This is because increasing the rate of reaction increases […]

As a result, if I drop the ball from 50cm, then from 100cm, the re-bounce of the ball should be double from the one before. This is because, for example if the ball I drop from 50cm bounces 35cm back, it has lost 30% of its energy. Then the other ball I drop from 100cm […]

I state this because if any of them alter then the experimental data obtained will be of two variables and I will not be able to determine the precise effect that the substrate concentration had on the rate of reaction. 1. Temperature. This is an important variable to control because failure to do so will […]

1. I know that plagiarism is wrong. Plagiarism is to use another’s work and pretend that it is one’s own. 2. I have used the Harvard convention for citation and referencing. Each contribution to, and quotation in, this essay from the work(s) of other people has been attributed, and has been cited and referenced. 3. […]

The world’s demand for power is currently increasing at an alarming rate. Essentially, this demand is currently being met by a small number of energy sources. These include: * Fossil Fuels * Alternative Sources (Hydroelectric and Solar) * Nuclear Power (Fission) Nuclear fusion power is also in development and will possibly become one of the […]

The purpose of this investigation is to compare the ability of two different strains of yeast to respire, when using different sugars as respiration substrates. Considering the lengths that have been reached to develop varieties of yeast with greater suitability and effectiveness for very particular fermentation purposes, it seems reasonable to suppose that two different […]

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