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Engineering - October 2007

[Selected]: All categories Science & Mathematics Engineering

construct an exclusive-NOR gate by interconnecting 2 3-state buffers and two inverters

2007-10-30 05:54:08 · 1 answers · asked by Anonymous

I've played around with a Van de Graaff generator before in the special projects program at my school and I've seen a Tesla Coil in action at the McWane Center in Birmingham, AL. I know about the inner working of the Van de Graaff gen. Rubber belt, copper wire, steel ball, motor. Easy enough. But what about a Tesla Coil? Our school doesn't have one of those laying around for us to mess with (our science classes are very general) and I just want to know. Please don't copy something from Wikipedia. I hate that. Would someone who knows what they're talking about explain it?

By the way, I don't have a project or anything, I just love science but biology is boring me to death. This question came to me while I was watching some Tesla Coil videos on Youtube.

2007-10-30 05:47:24 · 6 answers · asked by lizzzardbreath 2

Modern dams are made up of conceit and it must be dried out to build the dam. I wanted to know that how it is achieved?

2007-10-30 03:26:24 · 4 answers · asked by Swapnil P 2

What is the difference between it and active filter networks?
Can you explain more about 5th order butterworth?
Give me more examples about passive filter networks with brief explanation...
I will appreciate if u give me useful references...

2007-10-30 02:04:44 · 3 answers · asked by David Junior 3

2007-10-29 21:01:14 · 8 answers · asked by mbnithin_hegde 1

2007-10-29 21:00:37 · 9 answers · asked by Anonymous

I have this assignment to come up with a design of a robot that is 6 inches wide. It has to climb 4 stairs 4 inchs up, 6 inches in depth, and 2 ft across. it has to since a line perpendicular to the riser before moving to the second step, a 2 inch hole beofre moving to the third step, and the a red led light before moving to the fourth and final step. this cannot leave the surface so it rules out going air born, and it has to be fully autonomous. We can use any vex parts, so others if we can justify it, but there is not point in transmitters since we cant use a remote controll.. I can seem to think of a good design I feel confident would complete the task of climbing the stairs and finding this things all on its own. any help ya'll could offer me would be great! thanks

2007-10-29 19:45:29 · 1 answers · asked by Scottyman2002 2

2007-10-29 19:41:25 · 11 answers · asked by mugen_ex 1

please help

2007-10-29 18:55:32 · 2 answers · asked by Anas S 1

The big fire in Southern California got me really thinking of fire prevention. As a country we have been practising fire surpression for almost a century. Should we have a better fire prevention program? I mean, one from the grass root? Can I lit a fire in my backyard when I know a big wet storm in coming?

2007-10-29 18:00:46 · 4 answers · asked by Anonymous

I need to know ASAP for a charity dental program in progress in a remote village. Thank you!

2007-10-29 16:50:16 · 5 answers · asked by Ruthanne L 1

If so, with what can I lubricate it with? Would high temp. grease work?

2007-10-29 16:17:04 · 3 answers · asked by jetengine767 3

Say i have a telephone, i want to automate pressing keys and also pickup the cradle, how do i automate them using a circuit connected to the pc and if i send signals it should pickup the cradle or press buttons, how do i achieve this?

2007-10-29 16:08:32 · 1 answers · asked by Ramanathan k 1

If the distance from B to C was then found to be 89.5 ft, the angle DAE was......?

2007-10-29 15:36:14 · 1 answers · asked by Chopper 2

To estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 5.6 seconds after the stone is dropped?

2007-10-29 14:51:56 · 1 answers · asked by JerseyGirl 2

What charge do u give the electroscope when u touch it with a charged glass rod?

Please explain..thx

2007-10-29 13:33:54 · 1 answers · asked by bubba habba 1

A circle of unknown radius has a chord of length d whose midpoint is 1 foot from the circle. Find the radius, r, of the circle [in inches].

2007-10-29 12:02:04 · 2 answers · asked by Anonymous

Also are they considered to be economical.

2007-10-29 11:26:13 · 8 answers · asked by Anonymous

Does the following make any sense? "Programmable logic devices enable the configuration of logic gates on a chip after it has been produced." This is for a school assignment where I have to find the relationship between logic gates and fpgas and this is what i came up with. Any information or feedback would be very helpful

2007-10-29 10:38:21 · 4 answers · asked by RS 2

Does the first ramp have to be three times as long as the second ramp?
Why?

2007-10-29 10:29:31 · 5 answers · asked by Anonymous

and what's the name of the geometric figure which has the minimum eccentricity?

2007-10-29 09:41:53 · 1 answers · asked by Samanthaac 2

this is for my school project, conics section

2007-10-29 07:57:54 · 1 answers · asked by phil 2

2007-10-29 05:29:14 · 3 answers · asked by Anonymous

2007-10-29 05:22:27 · 2 answers · asked by LEO 1

its a question to create a automatic machine

2007-10-29 05:14:24 · 1 answers · asked by LEO 1

In this lab, we couldn't make a short circuit so we were instructed to measure the Vout for different load resistances (20ohm,30ohm,50ohm, etc) How does that help me find Rth. From those two values, I'm supposed to calculate Rth for each.

oh and Vth = sin(2*pi*1000t)

the only other equation i have is from using a voltage divider on the circuit and getting Vout = Vth(Rload/Rload+Rth)

2007-10-29 04:47:47 · 2 answers · asked by Anonymous

What are the height length and wodth?
A website would be great as well!
Thanks

2007-10-29 04:08:56 · 0 answers · asked by Anonymous

2007-10-29 03:01:42 · 10 answers · asked by meone 1

Based on your observation list out 4 points on the characteristics of logarithmic or exponential functions and their graphical representation.

2007-10-29 02:41:19 · 1 answers · asked by oliver 1

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