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Like blowing on the sails to make a sailboat go (archive)
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Posted by faster (m) Ausgang on October 16, 2000 at 13:13:55:

In Reply to: You slept through physics class. posted by Dan in SD on October 16, 2000 at 10:27:03:

Dan, oc, you're right. Funny how people forget it would take more energy to compress the gas in the 1st place than could possibly result from using it to move something later on.

Similarly, I've taught sailing to guys who think if you hooked up an electric fan to the battery power in a sailboat and blew it on the sails you would go forward.

If it weren't for that PITA Newton, I guess we could.




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