Engineering - May 2007

WHICH PROGRAMMING LANGUAGE IS USED TO PROGRAM ROBOT?

2007-05-23 11:44:22 · 2 answers · asked by powerx 1

2007-05-23 10:50:10 · 12 answers · asked by Tech ask 1

The ratio of gravel to sand to cement in concrete is 4 : 2 : 1.
How many m3 (that's the little 3... "cubed") of each is required to make 10m3 ("cubed") of concrete?

First who gets right with small explanation gets 10 points!

2007-05-23 10:35:50 · 8 answers · asked by Hilder 4

The trash dumped into landfills all over the planet can be used for making oil so why not?

2007-05-23 09:38:47 · 5 answers · asked by jim m 5

do they start with the crane house and keep adding sections underneath it? Or do they build they tower and then somehow top it with the actual crane?

2007-05-23 09:13:38 · 1 answers · asked by DANIEL R T 2

I'm writing a story! A plot point hinges on coming up with a credible way to destroy these alien structures. The protagonist is a structual engineer. So, the solution should use his background. I don't know what the pipes are made of. If it helps the plot, I could make them out of earth or a synthetic plastic or some strong metal or something not yet invented! Can anyone think of a cool but credible way of destroying these structures? If it helps, the pipes need to be big, but I could scale them up or down if it lent to a more spectacular scenario. Again, I need something based on science. e.g. "The weakest point in the tube would be half way between, blah, blah, blah. So if you had some theoretical explosive device, you could melt....."

2007-05-23 09:02:23 · 4 answers · asked by Michael B 1

I just blew some wind at a hand held DC fan to see what electricity could be generated by running the DC fan in reverse by blowing wind at it. I surprised myself with a reading of 0.25 Volts and 30 mA, generating power of approximately 0.01 Watts. (rounded up)

Does anyone know if this is indiciative of the level of power I could expect if I tried this experiment on a 12V DC car fan?

Just a guess please....

2007-05-23 08:50:07 · 5 answers · asked by James 6

I have connected a 3 mt. Earthing Electrode to the Neutral of the distribution transformer of my factory. But I saw to my shock that already a current of 10 Amp. is already continuously flowing from the neutral toward the earth electrode !!! There is an old earthing also, and there the current is 28 Amps !!!
What is happening here ? Normally there is no such current flow into the earth electrode from the neutral I suppose. So is the neutral faulty ? Where is the fault ? Is the transformer faulty ? Or is there some other problem ? How to eliminate this current ? ( Otherwise only "fault" current arising from short circuit or lightning etc is supposed to flow into the earth pit.)
Can someone tell me what's the problem and how to rectify it ?

2007-05-23 08:40:11 · 3 answers · asked by Anonymous

I mean why are they in a circuit what are they actually used for? I no what they are just not why they are needed. I need to know for my Design Tech project. Much thanks x

2007-05-23 08:25:19 · 5 answers · asked by just_a_metaphor 2

If you put a lightbulb in a microwave would it light up before it got to the point of exploding..anyone? :)

2007-05-23 08:21:35 · 6 answers · asked by margeatalltimes 2

My school is having a science expo day and one of the activities is a "Pasta Power Tower". We can only use 40 10" pieces of speghetti, 6 mailing labels, an 2 rubber bands. We have to use these materials to make a structure that will support a coffee can an as many 3 inch nails as possible. we can cut up the pasta and the mailing labels as much as we want. I need help!! I need ideas of what kind of structure to build and how to build it. please and thank you!!!!


P.S. if you can provide pictures or links to pictures of what you mean, then it would be a huge help.

2007-05-23 07:54:28 · 2 answers · asked by emilia 2

2007-05-23 07:44:07 · 5 answers · asked by Bilkis M 1

im about to transfer to a uni next year, and i realized aerospace and mechanical engineering are quite similar to one another. which one would be the better choice.. my intended major was aerospace but im thinking about changing.. what would be teh better choice to go with? and why

2007-05-23 07:03:04 · 5 answers · asked by Anonymous

The ones that have solar panels and and when night time comes they automatically turn on. How do they work? This is for a DIY project I want to try. Also how much power to solar panels generate? What size do solar panels come in? Do they come in the small size that are on solar lights? Also can you buy those solar panels and where?

2007-05-23 04:46:32 · 8 answers · asked by christigmc 5

2007-05-23 04:43:30 · 6 answers · asked by Anonymous

i was told to convert square yards to tons you use......0.057 per square yard per inch. is this true? and / or does anybody know any other conversions?

2007-05-23 04:36:01 · 4 answers · asked by cuzzintruck 2

I would like to operate a european lawnmower which runs on 230v/50Hz. It is made by Bosch and they do not market it in USA. There are many other rechargeable models which are not marketed in USA but are very nice environmentally friendly machines.

2007-05-23 03:58:22 · 3 answers · asked by Kaushik G 1

which industries requires clean air/cleanroom and what products are usually manufactured using clean air/cleanroom?
what is the importance of clean air in such industries/productio process? any answers will be appreciated.any referrals to related and reliable websites will be a help too!thanks!

2007-05-23 03:23:18 · 1 answers · asked by Captain Umbrella 1

2007-05-23 01:51:05 · 4 answers · asked by wonderingstar 6

2007-05-23 01:25:30 · 5 answers · asked by juliaggrey 1

what is the expansion rate of helium versus altitude? Forexample, at what altitude does a 1 m3 helium balloon expand to become 2 m3 helium balloon?

2007-05-22 22:10:37 · 1 answers · asked by Anonymous

I'm not a company or anything so there might be restrictions on where I can by such things (ie trade counters) but where might I buy just the odd one or two? I'm after thrust bearings if that makes any difference.

2007-05-22 22:06:00 · 4 answers · asked by tuthutop 2

I`m working at a highschool, and kids are playing with my door, I have 2 doors, one of wood and one of metal, what should I use to make the metal door electric? something like a battery or something?

2007-05-22 19:05:54 · 3 answers · asked by Apollo 4

2007-05-22 18:46:39 · 2 answers · asked by PETL 1

I'm basically building a protective shield for an egg by usiing only toothpick and elmer's glue. Any Ideas on how to start or what to do?

2007-05-22 18:40:12 · 3 answers · asked by 666 1

2007-05-22 17:32:25 · 1 answers · asked by de.schizo . 1

2007-05-22 15:39:34 · 3 answers · asked by Anonymous

im looking for an alternator that will work with a battery powered motor. i want to use a battery to power it and use it to charge another battery.

2007-05-22 14:43:32 · 4 answers · asked by khris z 1

I had a test today and that was one of the questions. I freaked out.

2007-05-22 14:16:24 · 4 answers · asked by Anonymous

I have a multi-meter, and I have figured out which wire is hot. How can I figure out which of the two remaining wires is the neutral wire and which is the ground?

Thanks.

2007-05-22 14:13:12 · 3 answers · asked by frogster99 2