Engineering - November 2007

please help me in giving a proposal in line with a color recognizing robot. the robot can recognize up to two colors only. any idea what to propose? the theme is "robotics with color recognition."

2007-11-27 12:43:25 · 4 answers · asked by leachim 3

my project is to be able to build an organic prototype that will be able to travel a 7 degrees elevated surface and be able to go through an incline plane with heights of 6, 9 and 12 inches. The objective of this is to have the protoype make a projectile flight that will land on our cylindrical shaped target. There is no inorganic force that can affect my prototype. I was thinking of having the car wind up while its moving so that it will build up momentum to make the jump however I am lacking in knowledge in how to do this. Is there actually a way for me to increase the kinetic energy of my prototype while its moving, if so how....if i am doing the winding of the wheels how am i to do so with only organic materials? please help thank you.....

2007-11-27 12:41:29 · 1 answers · asked by maryll d 1

2007-11-27 12:35:25 · 2 answers · asked by Anonymous

this is 4 central sterile processing

2007-11-27 12:28:29 · 5 answers · asked by todd d 1

a 150 ft run of DWV PVC plastic drainage line is suddenly subjected to a flow of hot water from an industrial process. the effective tempreature of the pipe rises to 120 deg-F from the factory tempreature of 60 deg-F. by how many inches will it increase in length ??

2007-11-27 12:24:33 · 2 answers · asked by masrbobo 1

Magnesium chloride sinks to the bottom of a brine pit. Would it be better to filter or reduce to smaller tank and evaporate if it is an 80 acre pond 10ft deep?

2007-11-27 11:44:42 · 1 answers · asked by blondesrus 1

at a random point on the line. What is the probability that the break is less than 30 feet from a pole?

I need step by step instructions on how to solve this and other problems like it. Thanks!!!

2007-11-27 11:02:25 · 1 answers · asked by Sharar M 2

I need to determine the location of a movable weight (180 lb(m)) hanging from a beam that will result in equal vertical reactions at either end of the beam.

The left side of the beam (A) is attached to a hinge (or pin if you like). 3ft. in the +x direction there is 420lb(f) in the -y direction. 6ft from that (again in the +x direction) there is 640 lb(f) in the -y direction. Then another 6ft from that is the end of the bar which rests on a roller (point B). So the total length of the beam is 15ft.

Neglecting the weight of the beam I figure the total force in the -y direction is -1240 lb(f). So the reactions at A and B should each be 620 lb(f) in the +y direction right? So then, the total moments are: 620(0)+620(15ft)-420(3ft)-640(9ft)-180(xft)=0 right? I determined that the weight should be 12.666667 ft from the hinge. Did I do this right?

Also, there are no forces in the x direction.

Thanks for any help.

2007-11-27 11:02:05 · 2 answers · asked by Milo 3

I was using a airfoil in a wind tunnel in school to find out drag and Co-efficient of drag.. anyway. Drag was given from the computer and i need to calculate the coefficient. I found that i need the surface area. I have the dimensions of the wing im using. They are 19.5cm x 10.3. So do i just multiply those, or do i also multiply by 2 to account for the top and bottom. Or is the surface area when calculating Cd just one side. thanks

2007-11-27 09:48:24 · 2 answers · asked by joe 1

Just wondering. Some say 500 (Farenheit, I kno i spelt that wrong...) other say 1,000. Anyone have definent answers?

2007-11-27 09:37:37 · 5 answers · asked by Anonymous

By how much will the device multiply the input force?

2007-11-27 09:14:12 · 3 answers · asked by Anonymous

I need at least 10 things silicone is used for. It's history, and how it's made. Who made silicone in the first place?

The entire process of how we make silicone would be great. In detail please.

2007-11-27 08:31:46 · 7 answers · asked by ★ Dee.. <다영> 2

an--> a to the power of n,
bn-->b to the power of n.

2007-11-27 07:21:38 · 2 answers · asked by venkattsr 1

Is friction always a net force? Can you think of an example where friction applies a force but does not result in accleration?

2007-11-27 07:12:24 · 1 answers · asked by Ryan G 2

The method needed to make oil is very simple and not even something that can be patented so is it just too easy to be something to make money doing that keeps it from being done? What is the problem with making oil from some of the trash we not dump in landfills and/or biomass?

2007-11-27 05:11:24 · 7 answers · asked by jim m 5

Could someone please describe how ABS brakes work and what impact they have on forces on the car when braking.

2007-11-27 04:27:29 · 3 answers · asked by Anonymous

Hi, there is a utility pole in my lot and there is also a cylindrical shaped transformer hanging off of it. I did some research on it and it is used to step down the voltage from 7000 volts to 120 volts.

Does the EMF (electromagnetic field) it generates pose any health threat to the household? Thanks

-jj

2007-11-27 04:03:21 · 6 answers · asked by jj 2

why do we have to be so different?

2007-11-27 03:23:08 · 9 answers · asked by Asile 4

Can u explain how it can be used to save electricity energy?

2007-11-27 02:38:31 · 4 answers · asked by David Junior 3

2007-11-27 00:24:34 · 4 answers · asked by Gerry M 1

2007-11-26 23:26:06 · 3 answers · asked by franchois 1

2007-11-26 19:03:09 · 6 answers · asked by Anonymous

2007-11-26 16:21:42 · 14 answers · asked by EMAD A 1

More specifically, is there ever a case where you could use an indoor cord outside without fear of trouble? (If the only difference is the grounding wire, could one use a short interior extension cord to connect a set of miniature lights... .2amps... outside. Keep in mind that the cord is short, plugged into a GFCI, significantly more robust than the mini lights' cord itself, and has only one ...also ungrounded... set of lights plugged into it?)

I'm certainly not advocating doing this, I'm just wondering what it is I'm missing. Thanks!

2007-11-26 16:05:15 · 10 answers · asked by BioRyan 2

skilled workers for boilers and what part of boiler they work for?

2007-11-26 15:58:22 · 3 answers · asked by rheden m 1

what is the power consumed by a lift to take 10 persons three floors down ?

2007-11-26 15:22:43 · 4 answers · asked by Sai 1

I am doing a double degree at the moment , Chemistry Sc and Chemical Eng . What kind of extra job opportunities can I get with a double degree compared to just Chemical Eng by itself. Will the double degree be a bonus when I look for employment ? I have an option of dropping out the Chemistry science , so i wanted some of your opinions . The difference is 1 extra year of study . Thanks a lot ( Im in Australia btw )

2007-11-26 14:34:06 · 4 answers · asked by Anonymous

Roughly how much hp do you gain per lb of weight dropped?

2007-11-26 14:04:04 · 3 answers · asked by gtfr85 2

orthogonal to AB, So the distance from P = (2,4,−4) to the line through the points A = (−1,−1,−4) and B = (0,−3,−5) is

2007-11-26 13:43:38 · 1 answers · asked by tchoxi2000 1

How do we make a simple circuit using these items???
My daughter is doing a science project. She has painted a shoe box black, and has a photo cell inside the box with the wire ends ot the photo cell extending outside the box. She has a divider running half way down the middle of the box. At the end she has a stand to place a ball on. She has painted several different colored balls, and will place them on the stand, and wants to see the different readings using a volt meter using a potentiometer. She has a hole in one end where she will use a flash light to see how it relects/volt meter reads off the colored balls.
We are having lots of problems trying to help her hook up this simple circuit. I thanks you in advance for your input!

2007-11-26 12:33:33 · 4 answers · asked by Candee Graham 3