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October 21, 2014

Homework Help: Physics-totally bewildered!!

Posted by Joni on Saturday, April 23, 2011 at 5:02pm.

I have a physics question. This is for extra credit which I really need to earn- If I made a solar cell how would I know which material is best to use if given choices like aluminum with a work function of 4.1eV at a cost of 2.40Kg or platinum with a work function of 6.4 eV at a cost of 58,430 or sodium with a workforce of 2.3eV at a cost of 0.20. If you could just explain how I figure it out not do all of the calculations-like do I multiply the work force by cost and the lower one is the best, etc.??

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