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euan

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euan

comparing photovoltaic cells and solar pipes

Hi. In an experiment where I compare the efficiency of photovoltaic cells and heating water with solar energy, how much water should I compare to how many cells? For example, for 100g of water, what...
13:38 Tue 20th May 20082 answers, last by euan 21:28 Tue 20th May 2008
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euan

can I grow taller?

I'm 18, and wondering if anyone could tell me if it's possible that I could still grow. If so, then how can I improve my chances of it. Vain I know, but I'm really short for my age.
20:17 Thu 15th May 20087 answers, last by showcatbenga 20:33 Sun 18th May 2008

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