Homework Help: science

Posted by Liandra on Thursday, September 20, 2007 at 10:49pm.

Hey. I need two examples of screws (like the one from the six simple machines) and it can't be a screw, jar lid, or drill bit.

science - drwls, Thursday, September 20, 2007 at 11:12pm
Here's one:
http://www.cogulus.com/archimedes/essays/essay1.htm
(The screw propeller)
How about a corkscrew for another?

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