tag:blogger.com,1999:blog-20389899.post2894085439310500049..comments2023-10-18T09:52:57.648-04:00Comments on The Inventive Tinkerer: Something I've Been Working On...Pete Marchettohttp://www.blogger.com/profile/07272568978812952829noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-20389899.post-17119326664152027432008-06-08T02:47:00.000-04:002008-06-08T02:47:00.000-04:00I suggest you check your math.For electricity, you...I suggest you check your math.<BR/><BR/>For electricity, your answer is off by an order of magnitude. For $0.10/kwh, I get 2.778*10^-8 USD/J.<BR/><BR/>Gasoline, at 45 MJ/kg, 750 kg/m^3, and 3.59/gal (your estimate), I get 2.81*10^-5 USD/J. At 3.89/gal, I get 3.04*10^-5 USD/J. With that last price, throwing in the efficiency of automobile engines as 30%, I get 1.015*10^-4 USD/J.<BR/><BR/>For a Snickers bar at 280 kcal and your price of $0.85, I come up with 7.26*10^-7 USD/J.<BR/><BR/>I should work out something like this myself, including various types of foods and whatnot, and post it on a blog of my own.kevinthenerdhttps://www.blogger.com/profile/16086908362924514104noreply@blogger.comtag:blogger.com,1999:blog-20389899.post-9927167460072107682008-04-13T23:54:00.000-04:002008-04-13T23:54:00.000-04:00iiiiiiinteresting.iiiiiiinteresting.L. Brownstonehttps://www.blogger.com/profile/12567534538260165267noreply@blogger.com