one great project is to build trebuchets. it can be a month or two- long project. a good size for experiments with these would be a trebuchet with about a 6 foot arm or less, so the projectile would not fly so far away that you cannot easily measure it.
what you can do with this is have some fun, launching things, and also either measuring the distance, timing how long the projectile was in the air, estimating the distance, experimenting with different weights and projectiles, etc.
many formulas and principals can be taught with trebuchets as learning guides.
in my junior year of high school, not too long ago, i built a trebuchet out of wood. its arm was about 6 feet long, and i used about 60 pounds of weight in some of my tests. using 60 pounds, i managed to launch a football about 35 yards. with proper tweaking, i am sure i could have gotten at least 5-10 more yards out of that much weight.
building a treb. is not that difficult. there are many designs, and you can look them up on the internet.
sorry i don't have any links. just search around for some good plans( i made my own plans going off of someone else's on the net)
have fun!
2006-09-07 17:42:47
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answer #1
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answered by Boba Fett 3
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Some d|ckhead in the chemistry Q&A was asking how to fulminate mercury. How about a project to demonstrate why one should *never* attempt this at home? (HINT: Do *not* do a 'test run' the night before ☺)
Seriously. How about an empty 1 gallon metal can with about a half inch of water in it. Put a burner under it and get the water to boil and fill the can with water vapor (steam). Then remove the heat and screw the can lid on (wear gloves ☺) As the can cools and the water condenses, atmospheric pressure completely crumples up the can. It's pretty impressive to watch it happen and see what 14.7 PSI really means.
Doug
2006-09-07 17:32:10
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answer #2
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answered by doug_donaghue 7
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An easy quick and painless one is to take a full glass of water with a smooth rim and put a playing card or other smooth object over the top. Then, while holding the card, invert the glass and take your hand away from the card. The water will stay in the upside down glass. This will illustrate force and pressure.
2006-09-08 11:26:50
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answer #3
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answered by daedgewood 4
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What effect does birth control have on a particular type of insect.
2016-03-17 10:26:42
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answer #4
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answered by Anonymous
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take a vacuum and point the nozzle up from the air coming out and float a beach ball in the airstream
2006-09-07 17:24:14
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answer #5
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answered by wizard 4
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make a tabletop still,and brew your own hooch for the teacher.a+
2006-09-07 17:21:25
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answer #6
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answered by Anonymous
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Demonstrate how much force it takes to pull one's head out of one's *ss.
2006-09-07 17:22:05
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answer #7
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answered by idiot detector 6
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hope these sites can help u
good luck!
=)
2006-09-07 23:18:59
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answer #8
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answered by lia 2
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