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- The design, building, and use of engines, machines, and structures. For any engineering topics not applicable to the categories below.
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Jan16-12 Greg Bernhardt
We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of...
Jun23-14 12:38 AM
OmCheeto
1,027 230,854
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,261
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,201
Hi, taking a chance here... i recently played a game. This game involved you starting out with a marble in 3d space,...
Aug17-10 03:39 PM
Sadpanda
3 1,193
Hi, Anybody can help to give me information about an electromagnet of size less than 6mm? Shams
Aug17-10 03:05 AM
sa007bd
0 1,303
Newbie here;I have a project where I need to know the formula to find the speed of a known quantity of air in cubic...
Aug14-10 04:20 PM
russ_watters
6 1,795
Hi, I was wondering whether there is a formula in terms of length and mass which would provide how far a person...
Aug14-10 01:08 AM
Curl
5 3,559
Hi! I have a device attached to serial port and i want to control it via matlab. I'm wondering if there is needed...
Aug13-10 11:11 AM
matic_knap
0 2,585
Hi All, Since from childhood we are reading a formula Torque,T = F x r where f is the force and r isthe...
Aug13-10 10:04 AM
xxChrisxx
5 3,389
what does the u(-t) mean in unit step funtion in basic function of signal and system?how can be time taken as -ve?
Aug13-10 07:39 AM
n.karthick
1 3,802
Hello, For 1-dimensional z-transforms, the final value theorem says that for a sequence x with z-transform X(z), we...
Aug12-10 11:17 PM
remifrere
0 2,216
I don't know if anyone can help but I have a friend who wants to capture his waste steam and convert it to energy -...
Aug11-10 03:52 PM
vespak
2 1,321
Hi there, I plan to build a ROV, and am currently looking at different methods of propulsion. I do not wish to use...
Aug11-10 02:17 AM
ROV freek
9 7,966
If you would be so kind, I need to interview someone currently working as an engineer. Questions are as follows. (If...
Aug9-10 07:03 PM
fortinj1354
0 1,705
Hey, I have some questions about alumina in an ultrahigh vacuum. To heat a metal (Mo) body (~1300C) I was thinking of...
Aug6-10 10:41 AM
Hellomyfriend
0 2,068
Hi. I have a scenario where I am spooling line onto a hollow housing of given minor and major diameters. The velocity...
Aug5-10 08:49 AM
sophiecentaur
3 1,720
I'm looking for a right angled dual output shaft gearbox like the one attached I cant find one anywhere, just...
Aug5-10 04:12 AM
bevelgearbox
3 5,612
Hi! I've been trying to find Sherwood number corrolations for various surfaces, but it's been surprisingly...
Aug4-10 07:47 AM
McDuck
1 4,591
I recently acquired an old oiless Gast vacuum pump for low vacuum experiments. What is the optimal configuration for...
Aug3-10 09:09 PM
rnabioullin
0 3,138
Trying to calculate this for work. Have 160,000 lbs drop 45 ft with mud weight of 16.5
Aug3-10 11:55 AM
Gokul43201
2 1,907
Hello guys, I'm new here and just need a little advice. I was planning on a Engineering degree I finished my first...
Aug3-10 09:27 AM
MetalAttack
3 2,005
gday all. i am trying to work out what size stepper motor i need to move the power head on my sawmill. power...
Aug1-10 07:42 AM
weisyboy
0 2,558
I need some help estimating the heat transfer of a system. If I have an exposed length of pipe with a dynamic fluid...
Jul31-10 01:10 AM
JayW
1 5,003
How do i make a resistance heater for heating a liquid? DC or AC both are acceptable. But i need to know the power...
Jul30-10 04:55 PM
Jim1138
17 17,247
just out: What: Press Conference to Launch the Wendy Schmidt Oil Cleanup X CHALLENGE When: Thursday, July 29, 2010...
Jul30-10 03:14 PM
RonL
19 2,719
I am building a new 1.5 (Metric) tonne capacity tipping body for a small van. My question is concerned with the...
Jul30-10 09:14 AM
Ginsambo
0 3,781
Hi I am trying to determine the power usage of a progressive cavity pump in an oil well setting. I have some data to...
Jul30-10 09:13 AM
simulation135
4 3,544
I'm looking pneumatic/hydraulic simulation software. Anyone know any good ones? It would be nice if they had a trail...
Jul30-10 07:20 AM
vijay Hatkar
11 52,644
Hello, I would be pleased if someone could explain me how a partially threaded screw (lag screw) exerts compressive...
Jul30-10 12:53 AM
mgb_phys
4 5,166
Please look at the attached pictures. I have 10 lb (45 N) of force applied at the end of the arm. We are seeing some...
Jul29-10 09:56 AM
jir_539
0 2,192
How does it do it?! I bought one this weekend and I think it is really cool....but I wonder how it does it. My...
Jul28-10 02:52 PM
Proton Soup
31 12,438
Hi all, I have seen some instrumentation analytical laboratories (not cleanroom standard) carpeting the floor and...
Jul28-10 02:38 AM
rachelanne16
7 1,736
For any financial engineers here who understand Hull's derivative pricing book. I've gone through chapter 12 (Wiener...
Jul27-10 11:51 AM
ghouse099
2 1,846
I need to replace an air conditioner compressor unit that sits on the 2nd floor walk way on my stilt home in the...
Jul26-10 11:53 AM
Studiot
9 2,359
How does the water pump inside a steam iron work?
Jul22-10 12:18 PM
brewnog
1 2,731
Last semester I took an Engineering Graphics course and the software we used was the I-DEAS by NX.. Somebody has...
Jul21-10 01:09 PM
Brammy
5 13,801
How does white light scanning work? I know the system is used in industry to measure parts for dimensions like...
Jul21-10 09:46 AM
Ranger Mike
6 4,056
I'm working on a project where I have to construct a cubic box, then find the heat transfer coefficient through the...
Jul21-10 08:05 AM
DinoRF
2 3,588
See link ro forum in homework/coursework section http://www.physicsforums.com/showthread.php?t=417264 Thanks
Jul20-10 10:11 PM
EspElement
0 1,948
I'd like to know how you check that some simple structure's design is adequate. I know that's bound to be a baby...
Jul20-10 03:28 PM
abrogard
19 7,548
I was asked by the CE to do a fatigue calc for a speaker pole going up in key west. im using AASHTO standard spec for...
Jul20-10 01:37 PM
john.phillip
1 1,794
Hi, I'm in the process of miniaturizing a device that consists of X and Y linear actuator slides. I'm looking for...
Jul19-10 02:30 PM
alvin6688
0 2,365
Hey, I just fnished med school and I have been conduction biomechanical research for the past 3 years now. I am...
Jul19-10 12:48 AM
aprillove20
14 2,456

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