Engineering - November 2007

2007-11-16 05:38:08 · 18 answers · asked by bat 2

i need it for my skul project so plz............................

2007-11-16 04:11:54 · 7 answers · asked by Aki 1

2007-11-16 03:40:40 · 11 answers · asked by david f 1

We are doing a project where we have to launch a plastic golf ball exactly 4.5 meters using a cheap $1.50 mousetrap and we are looking for suggestions as how to achieve exactly 4.5 meters.

2007-11-16 03:31:33 · 2 answers · asked by Anonymous

The range of human hearing is roughly from twenty hertz to twenty kilohertz. Based on these limits and a value of 325 m/s for the speed of sound, what are the lengths of the longest and shortest pipes (open at both ends and producing sound at their fundamental frequencies) that you expect to find in a pipe organ?

A. shortest pipe ? m
B. longest pipe ? m

2007-11-16 03:10:35 · 1 answers · asked by Anonymous

2007-11-16 03:08:35 · 5 answers · asked by Mark G 7

im doing a debate in class for theis topic my opponent wants to throw that it would be expensive and i was looking to find out exactlly how expensive so that i could put it into perspective when i find the right argument to say back to my opponent.

2007-11-16 02:32:51 · 5 answers · asked by Anonymous

Hi all, im currently facing the problem with low air pressure to operate on two machine together with the single input air hose, Booster Regulator can help?

2007-11-16 02:26:20 · 1 answers · asked by su 1

How does satellite radio work without a parabolic reflector to concentrate the weak unidirectional satellite signal?

2007-11-16 01:16:54 · 5 answers · asked by Anonymous

2007-11-15 23:55:20 · 3 answers · asked by hulkmaina_18 1

By this, I mean portable laboratory grade lasers that could cut through at least plastic (heck, even Wicked Lasers can do that). I mean powerful lasers that can at least cause severe (3nd degree & up) burns in about half a second. It must have a sustainable power source (continuous for at least 5 hours). It could be a continuous beam or a rather silly "blaster beam." Is it possible today?

2007-11-15 16:33:30 · 4 answers · asked by are0z0ne 2

2007-11-15 16:21:48 · 2 answers · asked by Anonymous

2007-11-15 16:14:33 · 3 answers · asked by dnag e 1

I want to reduce the 12 volts from my battery into 7.2 volts. (I'm a noob at resistors) How would I go about doing this? Can some one give me a list of resistors I would use to do this, and possibly even a diagram of the circuit? The easier and the cheaper it is, the better.

2007-11-15 16:12:26 · 5 answers · asked by Jimmy T 2

By this, I mean portable laboratory grade lasers that could cut through at least plastic (heck, even Wicked Lasers can do that). I mean powerful lasers that can at least cause severe (3nd degree & up) burns in about half a second. It must have a sustainable power source (continuous for at least 5 hours). It could be a continuous beam or a rather silly "blaster beam." Is it possible today?

2007-11-15 15:55:21 · 1 answers · asked by are0z0ne 2

2007-11-15 15:31:28 · 2 answers · asked by jess r 1

2007-11-15 15:25:43 · 7 answers · asked by chopin 2

I am designing a simple amplifier, specifically a class AB amp, and want my load resistance to be 8 ohms. I have two small diodes in my circuit, and am contemplating using transistors 2N3904 (npn) and 2N3906 (pnp). Am I on the right track?

2007-11-15 15:07:46 · 5 answers · asked by MeShell 2

anyone knows what program to use to draw Kano Diagram??

2007-11-15 14:22:29 · 1 answers · asked by Lin 1

I have Eveready batteries for electronic application, they come in different voltages like 15, 22.5 ets. What is the difference from regular 9 V duracell batteries, besides the voltage?

I need an 18 V DC source for 3mA current that would last for a long time. I know I could always experiment. I'm asking cause it's critical in my case that it won't die - a lot of stuff stops working and irreversible changes happen.

Can I assume that a larger (in physical size) battery will last longer?

2007-11-15 14:20:15 · 8 answers · asked by Snowflake 7

I have a business assignment and I need to draw up a critical path analysis. I already have the activities and the duration details.
I need the diagram with the boxes and arrows.
Thanks

2007-11-15 13:00:37 · 2 answers · asked by . 1

I WILL BE ONE, and you all WILL tell what are,and the requirements. NOW!

2007-11-15 12:28:15 · 2 answers · asked by Izzy 2

2007-11-15 12:11:11 · 3 answers · asked by b4f2f 2

I bought the wrong bulb, but I wanted to know what would happen. I'm pretty sure it might start a fire, but I'm not 100% sure.

2007-11-15 10:48:58 · 4 answers · asked by Adam S. 3

Here are 3 interlocking gears. The largest gear has 14 teeth, the middle gear has 12 teeth, and the smallest gear has 6 teeth. The smallest gear can ONLY move in a clockwise direction, while the middle gear can move counter clockwise.


Q: How many turns will each gear have to make in order to turn all gears in their original starting direction??

2007-11-15 06:56:57 · 4 answers · asked by ** 3

Syn gas contains CO and H2 so I do not want to lose any/much of these two but would like to know what the best aqueous/organic solvent.

References would be appreciated.

2007-11-15 05:37:48 · 3 answers · asked by Anonymous

What material is the circuit board in N64 made out of?
here is the picture: http://www.geocities.com/hongwei24/Picture7.jpg
http://www.geocities.com/hongwei24/Picture4.jpg

2007-11-15 05:21:38 · 3 answers · asked by hong_wei886 3

2007-11-15 05:05:07 · 5 answers · asked by Anonymous

like what coures u need and stuff

2007-11-15 04:07:25 · 1 answers · asked by Anonymous

i change electric motor on furnes but rotations on the blower is oposit

2007-11-15 03:59:24 · 4 answers · asked by Vera P 1