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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
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,245
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,269
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
1,027 230,989
Given the mass flow, Cp, temp of the inlet streams of both hot and cold streams. As well as being given the inner...
Oct20-09 03:15 AM
kyta
0 1,511
I am looking for an equation to determine the pressure produced by boiling a liquid. (On the net I can only find...
Oct20-09 07:17 PM
Phrak
9 1,938
Hi, I am a hobbiest and I am trying to build a weight sorting machine that sorts out weight object according to their...
Oct20-09 08:10 PM
dsesmg
2 1,542
I created a website called engineeringunlimited.wordpress.com . The purpose of my website is share my love of...
Oct21-09 11:33 AM
MacLaddy
3 2,478
Hi, I've got a friend who's birthday is coming up. She's an aerospace engineer and I was thinking it would be fun to...
Oct21-09 12:02 PM
Mech_Engineer
1 2,749
Hi, I am a PhD student in math and in my current research I'm faced with the problem of analyzing the rigidity of a...
Oct22-09 10:07 AM
topcomer
35 8,068
Hi, I'm trying to figure out how long a wire will be when I hang it up between two supports. I have: The...
Oct22-09 10:46 PM
nvn
4 4,758
I'm not sure where to post this, so please excuse me if this is misplaced. I need help understanding how the terms are...
Oct24-09 10:33 PM
cuad
3 6,917
Hi All, I have a problem i am trying to figure out, if an object (scale drawing in attachment) is travelling at a...
Oct25-09 09:03 PM
nvn
3 2,514
I have been asked to design an extensometer (relative displacement sensor) that uses a single beam as the structure...
Oct26-09 01:13 PM
Oulrish
5 2,345
I am a fledgling undergrad with a potential mechanical engineering degree in my future. I just have a hypothetical...
Oct28-09 02:13 AM
spacester
6 2,267
Hi to all! I'm new in this forum and i would like to share some thoughts with you guys! i'm 40 years old and i'm...
Oct28-09 12:07 PM
Kurdt
4 1,349
dear engineer, how can we calculate the current (I) if we have cable with 25 mm size for 480V? and are there any...
Oct29-09 09:18 AM
mexmet
7 5,593
Does anyone know where i can source ferrous iron (rod or bar) from in the UK? This is for a Third Year university...
Oct29-09 12:03 PM
Bob S
1 2,300
Given the same radial force and combustion pressure, would it be correct to say that the larger diameter piston would...
Oct29-09 03:33 PM
xxChrisxx
8 2,999
For a second order differential equation, is it necessary to derive a weak form if quadratic interpolation are used?
Oct30-09 11:25 PM
ank_gl
1 3,222
I have been told that to solder properly the source of heat is to be directed at the bottom of object to be soldered...
Oct31-09 04:42 AM
Danger
3 6,011
Hey all, I just saw an article on yahoo about a company called Galactic Suite (http://www.galacticsuite.com/) that...
Nov2-09 03:36 PM
Mech_Engineer
1 1,534
Hello, I am a first year engineering student and I have a short question about refrigeration systems. Just want to...
Nov2-09 03:37 PM
sgehrenberg
6 1,988
I am stumped on how to convert my units for the equation for Force of Lift. FL=CLPA\frac{v^{2}}{2} My equation...
Nov3-09 12:39 AM
aaronmorg
9 4,058
Hi all, I am new here, this is my first post. If this is the wrong forum to be posting this in, please point me in...
Nov3-09 06:20 PM
Mech_Engineer
11 2,601
In regard to (tile) radiant floor heating, a professional is needed to come and install a heat-conducting plastic mat...
Nov3-09 10:12 PM
FredGarvin
4 1,679
A pressure vessel is stamped with an MAWP of 150 psi at 450F. We are operating at 120 psi at ambient temperatures...
Nov4-09 04:36 PM
Q_Goest
3 3,705
Hi, Can anyone recommend a good adhesive to glue a strain gage to steel? Ideally it would be something readily...
Nov4-09 07:28 PM
Phrak
3 4,820
I obtained lift and drag forces for an object I was testing in a wind tunnel and I wanted to know if it was possible...
Nov4-09 10:54 PM
ank_gl
1 1,648
I want to reduce the weight of a square aluminum tube, 36 inches long, 1 inch square, and 1/16 inch thick, while...
Nov5-09 12:20 AM
Mech_Engineer
1 3,201
Hey, I am wondering if any one can help me. I need to calculate the velocity of water exiting a water wheel. I have...
Nov6-09 12:12 PM
minger
1 2,784
Something seems funny in the Cengel & Boles Thermo text, 6th edition. The entropy chapter defines relative pressure...
Nov7-09 05:33 PM
deadstick
0 7,630
Hello. I'm thinking about building a 2D pathfinding robot. I was just wondering if anyone wanted to suggest a...
Nov7-09 10:16 PM
parkland
5 5,570
Hello forum , i have a spindle motor from an HDD and i pasted to this motor 6 facets polygonal mirror, the problem is...
Nov8-09 01:52 PM
anita1984
3 1,930
Hello Everyone, Okay so I am new to the engineering stuff and am starting off with some basic ideas. I wont get...
Nov9-09 06:54 AM
dr dodge
4 1,865
Alright. Um. We have 4 sheets of newspaper and 1 meter of masking tape. We have to design a structure to catch four...
Nov9-09 07:43 AM
dr dodge
3 2,706
Is the I-beam still favored by structural engineers?
Nov9-09 09:30 AM
Danger
11 2,516
How great would this be for a club house :tongue2: zE5PGeh2K9k
Nov9-09 09:35 AM
Danger
9 2,242
how to find reactions in this beam? if there is a internal pin support
Nov9-09 03:25 PM
stewartcs
1 1,412
I've been working in class and I'm having trouble clarifying how these two (if at all) are related. Say we have a...
Nov9-09 03:43 PM
Ignea_unda
2 4,887
I decided to try my hand at initiating a discussion. In particular, I'm interested in what others think about the...
Nov10-09 08:39 PM
Kenneth Mann
13 6,203
Hi wonder if there is anyone out there who can help me !! Whats the easiest formula for working out the measurement...
Nov11-09 02:19 AM
CarlAK
9 3,364
I know for a uniform load the M max is wL^2/8 What is the M max for a triangular load similar to this... this...
Nov11-09 02:23 AM
CarlAK
1 6,955
I have 2 each 1-1/2 ton refrigeration units for a walk-in freezer. I would like to build a dehumidifation kiln to dry...
Nov11-09 05:30 PM
russ_watters
3 3,505

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