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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...
Sep17-14 06:11 AM
johnbbahm
1,042 239,896
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,943
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 62,410
The digital multimeter I have says "Overload protection: F 250mA/250V Fused (10A...
T 06:39 AM
CWatters
6 441
So I have two cheap multi-meters and I've been going around the house and my parents car testing it on voltage. One...
T 06:26 AM
CWatters
6 442
I have seen the experiments done by the US after world war II on tv and understand how impossible it would have been...
Sep17-14 08:26 PM
Simon Bridge
4 712
IIT-JEE Mains And Advanced 2015: IITs may possibly revoke the actual ‘top 20 percentile’ criteria for JEE Innovative ...
Sep17-14 08:59 AM
SteamKing
1 265
Hey folks, Sorry if this is a boring topic or if it's posted in not the best subject but here goes. I'm working...
Sep16-14 09:53 PM
DrJohnSmith
2 562
Folks, I have an application that will require an air inlet port to occasionally be exposed to water (splashing...
Sep16-14 10:59 AM
fuse
7 800
Hi to all the forum members, my questions for this tread are correlated to the robotics arms for wafers like the...
Sep16-14 09:29 AM
iii
7 469
Hello everyone! I recently bought a small raspberryPi board, with its small "camera board". (link for camera...
Sep12-14 03:12 PM
ElectricPaint
2 443
I Need to design a Vertical cylindrical water tank to be build by Fiberglass. I need to calculate the tank also for...
Sep12-14 08:20 AM
Dutchwayne
4 794
Hello, I was browsing a derivation for the relationship between the curvature of horizontal road curves and the...
Sep11-14 05:11 AM
dean barry
9 880
hey everyone, im a chemistry student and i am currently working on my final year project, which is to find a chemical...
Sep10-14 11:40 PM
Mech_Engineer
7 477
Hello, I don’t know much about physics and I am building a rack for my pickup truck. For my own safety, I need to know...
Sep10-14 10:57 PM
Mech_Engineer
1 651
Hi, i am wondering how do you calculate the minimum film thickness between two plates, one smooth surface and...
Sep10-14 10:53 PM
Greg Bernhardt
1 398
Hi, i was unable to find this answer anywhere else on the internet...so i decided this would be the best i have a...
Sep10-14 07:31 AM
B0b-A
12 484
Hi all, It is well know that, rectangular or quadrilateral element gives better result over triangular meshes in...
Sep9-14 07:18 AM
NumericalFEA
17 1,440
New here and this is my first post. I've developed an online psychrometric calculator and I believe it is now working...
Sep8-14 07:25 AM
penderway
9 868
Most of his work is pretty straight-forward and can be explain easily with words but did he have any contribution with...
Sep8-14 05:51 AM
Domenico94
1 1,238
I'm trying to figure out how much force is required to move a 300/350lb object across the top of water and maintain a...
Sep7-14 08:12 PM
SteamKing
2 428
I have a multimeter and for the "ohmeter section" for resistance it goes from a range of ~ 200 Ohms to 2000...
Sep5-14 10:34 AM
Averagesupernova
2 401
It is an option on the multimeter, I have read a little bit saying it has to do with transistors and it is a "test"...
Sep5-14 10:19 AM
nsaspook
3 453
I've just started working in a workshop and I've seen these compressed air hoses that are used to clean materials and...
Sep5-14 07:15 AM
Cylom
3 373
I have only tested mine (it is a cheap one $20) it on a 9V battery, what is the limit? My multimeter starts from...
Sep4-14 05:36 AM
russ_watters
2 446
And did he have patent/s for it... I understand that their are alot of hoaxes and unsourced information out there...
Sep3-14 10:28 PM
berkeman
7 733
on road? and why not cuboidal ones?
Sep3-14 03:09 PM
Baluncore
9 594
I am making a ramps to load logs onto a portable sawmill. I would like to know the size steel tubing I need for logs...
Sep1-14 03:25 AM
Baluncore
2 558
Greetings, I wonder what are the usual thermal efficiency for vapor compressor (refrigeration cycle), and only...
Aug31-14 03:15 PM
russ_watters
6 525
Long time no post... I am very much disturbed after my research of measurement errors and corresponding norms,...
Aug30-14 11:55 PM
Mech_Engineer
1 674
Hi All, I am looking for a chart with A36 square tubing strengths. I am mostly concerned with tension strength but...
Aug30-14 09:49 PM
Mech_Engineer
3 718
Hi guys, 1. In this video: https://www.youtube.com/watch?v=Zdq4xsuH8a0 Could someone explain me how the linear...
Aug30-14 09:36 PM
Mech_Engineer
4 837
I've recently started doing a lot more residential structural engineering for local clients and the first thing that I...
Aug27-14 03:07 PM
henneh
2 578
We are working on an electronic solar hot water heater. We had it working but decided to change the way the...
Aug26-14 02:13 PM
frazelle09
13 3,750
Dear All, I am not sure if this is the right place or not for this post so i apologise in advance if not. I am...
Aug25-14 03:41 PM
boneh3ad
4 801
Hi! I recently tried to perform a simulation of a physical process on Comsol Multiphysics (namely I tried ot find...
Aug24-14 11:18 PM
enricfemi
5 1,048
Whom might be talking on this area?
Aug24-14 10:30 PM
MW Masailo
7 718
Hi, all. I was wondering what happens to sound if you've got two identical parabolas facing each other. ...
Aug24-14 07:30 PM
ScooterGuy
13 1,007
Dear all I'm designing an exhaust system for a wood working facility. Please correct me if I'm wrong as I'm new to...
Aug23-14 07:06 PM
mfb
1 763
I am wondering if my reasoning is correct for determining the energy due to the buoyancy of a deformed water surface....
Aug21-14 11:47 AM
private_donkey
2 441
Hi guys, I want a linear stepping motor to be able to apply an equivalent force 10 newton to push a syringe. How...
Aug21-14 06:13 AM
milesyoung
3 829
What size of HSS beem do I need to cross a 40 foot span with 500 kilos even distributed still weight. it will be used...
Aug18-14 04:53 PM
berkeman
8 738
Hi there im new to this site but I have been reading on it for a while. I have a question, I am building a...
Aug18-14 06:34 AM
yota4life513
4 414

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