AboutDan Fink Expertise Though my experience is mostly in the fields of electricity, magnetism, and physics, I have a broad science background. My career is in the field of alternative power sources -- solar, wind, water and battery power. But any questions about electricity, magnetism, energy conservation, power generation, electric motors, and even general physics are very welcome--especially from kids. They ask the best questions of all! I pride myself in answering science questions accurately, with ideas for SAFE, easy experiments that kids can perform by themselves--and that let them prove the answers to their own satisfaction. I think science should be fun, and available to everyone, regardless of age.
Experience I have volunteered in our local public schools for 5 years. I currently make presentations at our schools about electricity and magnetism, with a focus on solar, wind, water and other alternative power sources. I try to demonstrate at our schools how easy it is to make electricity, with simple devices using spinning magnets and coils of wire--powered by wind, water, bicycles, gerbils...etc. And of course solar panels! I am the webmaster of Otherpower.com, an alternative energy website. I have lived 10 miles from the nearest power pole for 11 years--I make all my own electricity from scratch with sun, wind and water.
Publications Otherpower.com
Wondermagnet.com
Co author of the book "Homebrew Wind Power" ISBN 978-0-9819201-0-8
My articles appear regularly in such magazines as Home Power and Back Home Education/Credentials BA Technical Journalism
Question Hello
I have to do a project for my School Certificate and I am wondering whether different temperatures affect the time it takes for coke to go flat when it is opened.
I'm also wondering if you can give me assistance on where to put my opened coke cans as veriables. The experiment question is 'Does temperature affect the rate at which coke goes flat' (<--- not quite to the quote) and I shall be putting one in the fridge, one at room temperature unaffected by the sun, one in a dark place away from the sun and one directly in the sun. I require 5 variables but lack one, or should I find more significance in the difference of temperatures?
Thank you for any help that you give me
regards Briana : )
Answer Hi Briana --
Looks like you have this under control. Yes, temperature will affect the rate that the CO2 comes out of solution from the Coke and into the air. The warmer, the faster.
For another variable, you might try surface area. Does putting the coke into an open bowl at any of those temperatures affect the rate? (it will).
