Engineering - November 2006

My physics project is something that has to launch a baseball and my idea was to make some sort of ballista/crossbow like weapon to launch it and instead of using a normal prod from a real crossbow as it would be too small in comparison to the size of crossbow/ballista i want to make, i was thinking of using a leaf spring from a car. Would this be a good alternative or are there any other materials i could use?

2006-11-30 01:19:39 · 10 answers · asked by Anonymous

Was the Inventor of the first periscope an American called Thomas Doughty?someone called Gibbs?or someone else?

2006-11-30 01:14:17 · 3 answers · asked by ASHERS 1

When the battery goes down from 12.6 to 11 this comparator will send a signal or a 0 voltage so I can take that output to turn on a charger.
I you have any idea how to build this I will appreciate a lot, my company is in risk so with this I can help.
Thank you beforehand for your time.

2006-11-30 01:01:00 · 2 answers · asked by pap3030 2

Best Invention for betterman of humankind.

2006-11-30 00:56:56 · 6 answers · asked by TG 2

2006-11-30 00:25:08 · 3 answers · asked by Anonymous

i was just wonderin what one is better and how much you make with each one

2006-11-30 00:07:03 · 3 answers · asked by Anonymous

2006-11-29 23:52:30 · 2 answers · asked by nibor 1

2006-11-29 23:48:21 · 7 answers · asked by Bungle, Zippy & George 1

Explain the importance of sampling systems and the need for representetive systems in analytical measurment ?

2006-11-29 23:13:52 · 2 answers · asked by Anonymous

2006-11-29 21:52:24 · 7 answers · asked by Anonymous

2006-11-29 21:04:05 · 2 answers · asked by devanathan d 1

Please guide me to some scientific sites which deal with the thermal processing in the jet turbine and the material of the blades

2006-11-29 19:18:36 · 2 answers · asked by icwf_79 1

2006-11-29 19:10:11 · 16 answers · asked by anil a 1

2006-11-29 18:38:45 · 4 answers · asked by melelisi 3

2006-11-29 18:13:43 · 1 answers · asked by নà§?লà¦?ণৠ1

when a 28.7g sample of KI dissolves in 60.0g of water in a calorimeter, the temperature drops from 27.2 C to 13.2 C. Calculate (triangle) H for the process

KI(s) -> K+(aq) + I-(aq)

answer is supposed to be 20.3KJ

2006-11-29 16:30:55 · 1 answers · asked by julia k 2

2006-11-29 16:19:45 · 3 answers · asked by Anonymous

2006-11-29 16:19:26 · 2 answers · asked by brainy 2

gravitational drainage

2006-11-29 16:05:40 · 3 answers · asked by Dr. Dick Bird, PhD 2

Not a utility pole or a telephone pole. But something else...What is it?

2006-11-29 15:46:52 · 3 answers · asked by George 2

I heard from someone that when, for example, building a computer, you have to be careful because your clothing produces static that can damage sensitive components. I think its bologna, but then again I don't know.

2006-11-29 15:21:21 · 5 answers · asked by montesat 2

2006-11-29 15:10:44 · 13 answers · asked by amolegends 1

How far from the center on the other end must a sixty pound child sit in order to balance the see saw?

2006-11-29 14:59:17 · 4 answers · asked by amolegends 1

2006-11-29 14:55:37 · 3 answers · asked by amolegends 1

three outlets do not work. All three outlets read 118-120 volts when I test them. But if you plug a TV or even a phone charger, the devices do not work. What's the problem???

2006-11-29 14:38:07 · 6 answers · asked by MYSTIKAL_NLP 1

2006-11-29 14:32:56 · 3 answers · asked by Anonymous

I'm trying to figure out how much wattage my X-mas lights are so that don't go over 1000 watts per out side timer device.

2006-11-29 14:28:52 · 7 answers · asked by Cassaundras2 1

2006-11-29 14:09:06 · 2 answers · asked by The Apostle 2

If so please explain theorly, and precisely. I need urgent help, so pls. answer. Thanks!

2006-11-29 13:35:36 · 4 answers · asked by gabriela12500 1

Im talking about a 1/25 HP pump motor. 220 volt 50 Hz. Can I run it on 240 volt 60 Hz? Rated for .44 amps.

2006-11-29 13:07:04 · 7 answers · asked by dak0tawayne 2