If you make a small coil (say 20 cm) of nichrome wire and connect it to a 6V DC power supply it will warm up. Let's say the wire has a resistance of 2 ohm, the power output will be P = V 2 /R = 36/2 = 18 W. For my test the temperature equilibrated at 40°C. Now when I blew cool air from a hair dryer over it, the coil dropped to a temperature of 31°C. I measured the wind speed with an anemometer to be m/s. Higher speeds dropped the reading (eg at m/s it was 28°C). I used a digital anaemometer from Jaycar ($70). For temperature I glued an LM335Z Temperature Sensor Linear IC (Jaycar $) to the wire and packed some heatsink compound (Jaycar $, although you may want the silver paste for $).
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Huge number of posters to help to produce some great maths displays - in particular focused on real life maths, maths in the news and careers using maths. I’ve also posted a lot of content on ibmathsresources - so if you like all this, check that out as well!
Hi would investigating the formula 1 racing strategy using game theory and monte carlo simulation be a good enough topic for hl?
Since joining IST, Dr Szeto has tutored the fully array of CIE IGCSE Chemistry syllabus topics. Students from German-Swiss International School have been taught concepts such stoichiometry, equilibria and electrochemistry, while topics such as acid and bases, thermodynamics, and rates of reactions were revised with students from Singapore International School . For a student from Shatin College , the concepts of atomic structure and organic chemistry were tutored.