Board Definition and 288 Threads

I was wondering what the given chance of landing on any specific spot on the map on a board game {Life}. In the previous thread someone else had they were using 2 die with a similar question. I on the other hand have a game of Life with numbers 1-10 on it. At first I was probably doing it the...

Homework Statement A uniform diving board of mass=27kg and length x=4.3m is supported by two beams. beam A at x=0m and beam B at x=1.1m. A 68kg diver stands at the other side of the board. A. Find force on support A. B. Find force on support B. Homework Equations Net force = 0 Net...

I have attached the diagram of my motherboard and my fan. I also want to remove the heat sink that is integrated one. I would be too grateful if someone could give me video link to do this. Thanks in advance.

Homework Statement So I solved this problem and I got stuck on B and I don't agree with what the college board says is the right answer or see why my answer is mathematically wrong at all... http://img138.imageshack.us/img138/7391/cehmistry.jpg Uploaded with ImageShack.us and here's...

Homework Statement A high diver of mass 50.0 kg jumps off a board 10.0 m above the water. If her downward motion is stopped 2.30 s after she enters the water, what average force did the water exert on her? Homework Equations Fnet=ma vf2=v02+2ax The Attempt at a Solution First...

Hi, Could someone recommend a good book that covers PCB connector design for both Surface mount and through hole technologies. Thanks. I'm a mechanical engineering and need to become familiar with the design of these components.

Gents, I have populated boards which a white box screen printed onto the board where a part number or serial number can be written in with a magic marker. I am looking for something more permanent for configuration control reasons and wanted to know if anyone has any successful experience...

Homework Statement The following problem is taken from the MCAT Prep book ExamKrackers 1001 Physics Problems A board with mass m and center of mass C sits on fixed, rotating rollers separated by a distance L. The coefficient of friction between the board and the rollers is u. The board...

(incase you are wondering I am not educated but have small mechanical know how) but I don't fully know how circuits behave. I have these hair clippers that seemed to blow a resister. It is a grey tube with a green stipe on one end and a gold stripe on the other. It is difinitely fried. I must...

"Speedwire" boards used to be made by an obsolete company called BICC-Vero. http://en.wikipedia.org/wiki/Speedwire These things are basically PCB's with holes on a 0.100" grid loaded with pins that are sockets on the top side for component mounting and insulation displacements forks on the...

Homework Statement In the figure, the diver is simply standing at the end of the board, before beginning her diving action. The distance from support post B to the position of the diver's feet is L~=~ 2.1 m, and the distance from support post B to support post A is d~=~ 1.110 m. The weight...

Homework Statement A horizontal, uniform board of weight 125 N and length 4 m is supported by vertical chains at each end. A person weighting 500 N is sitting on the board. The tension in the right chain is: a) 250 N b) 375 N c) 500 N d) 625 N e) 875 N How far is the person from...

Homework Statement A person who weighs 620 N stands at x = 5.00 m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m. (a) What is the force exerted on the support at x...

Ok, so what I am looking for, as the title suggests, is a strain gauge data acquisition board. Currently, we have been using all sorts of National Instruments stuff to obtain our goals. To this point they have worked fine, but now we need to seriously downsize for a new lab device we are...

Homework Statement A diving board of length L is supported at a point a distance x from the end, and a diver weighing w_1 stands at the free end . The diving board is of uniform cross section and weighs w_2. Find the force at the support point. The Attempt at a Solution I used the...

I know this is a very general question, but any info is appreciated. I wanted to know what is involved in going from prototype board to production. What costs are involved in getting a company to produce your circuit board design? Anyone familiar with approximate costs, min quantities, anything?

Has anyone here taken the College Board AP Physics exam? I'm currently taking AP Physics online and hate it (more because it's online than the difficulty of the content, though, I think). I'd like the college credit, but it can hurt if I do poorly, too, and I'm not sure how well I'll be...

I've recently started thinking about which exam I want to take for AP Calculus, and I'm wondering from those of you who have taken it or know details - is the AB or BC exam recommended? I've taken all of the AB and BC material, but I'm not sure if I can handle that quantity of material or want...

https://www.youtube.com/watch?v=qap9KdhWNWE https://www.emerycat.com/flare/next We're giving these a try. The second scratching board is "free", except the shipping and handling, which is $16.

I need help in programming a pic on a FR28 I/O board that i bought off of ebay. no software came with it, only pdf's. Essentially i want to hook up sensors (Thermocouple, ph, photon) and have the pic store the data (using flash mem). the data stored will later be uploaded to a computer. the...

in the below question are 2 identical, homogeneous boards, glued together at their centres with the forces applied as in the diagram. the maximum normal stresses are 30MPa for the boards and 20Mpa for the glue the maximum shear stresses are 10MPa for the boards and 10Mpa for the glue the line...

In many board games points are counted. Does some know the result to the following question? Assume that in each round points are given according to some normal distribution and points over the rounds are added up. Now say after N rounds the score of two players is X and Y. What is the chance...

Can't remember how the question is exactly asked but its something like this. A block is resting on a board and the board is at an angle of 15 degrees with the horizontal. What is the force on the block?

Hello forum , i want to ask you a simple question , i am building a circuit on a bread board, the circuit is an H bridge 8A , is normal bread board can handle this current or the connection inside the bread board will be in not safe mode ? Thanks for reply, Have a nice day

I work for a company which performs repairs on exercise equipment. One of my biggest problems is a constant failure of a Thermistor resistor on a certain brand treadmills motor control board. I am guessing poor design, but I am hoping somebody can clear up exactly what a thermistor resistor is...

Hi guys! I'm in the VIIth standard, and am building a solar powered RC plane. But however, I'll need help to figure out... One solar panel of a calculator creates 1.53 volts of power under a dim CFL. If photovoltaic cells are influenced by the lumen count, how much can it generate under...

Homework Statement An 80kg diver falls from a board into water 44m below the water. A)I found the potential energy of the diver on the board is 34496 B)kinetic energy as he stirkes the water=34496 C)I can figure out "how long does it take the diver to strike the water" Homework...

Homework Statement You jump off a diving board with a horizontal velocity of 1.81 and land in the water 1.4 seconds later. Gravity=9.8. How high is this platform? Homework Equations x=2.534, if that helps. The Attempt at a Solution I got 7.07 but this is not right...

Homework Statement A carpenter places a board weighing 22 lb on the edge of the roof 28 ft above the ground. How much potential energy does the board have in relation to the ground? Answer in units of ft · lb. Homework Equations PE=mgh The Attempt at a Solution I followed the...

Homework Statement A diving board has a vertical depression of 15cm when a 60kg person stands on it 3m from the fulcrum. If another person was to stand on the same diving board, 2m from the fulcrum, how much would they have to weight to create 4cm of depression? In class we did 2...

Homework Statement A nail driven into a board increases in temperature. Homework Equations If we assume that 60 % of the kinetic energy delivered by a 1.80-\rm kg hammer with a speed of 7.80 \rm m/s is transformed into heat that flows into the nail and does not flow out, what is the...

I have in mind to build a robot which needs 8 servos to provide movements, what i can not find is a control board, i want the robot to be completely autonomous, no radio control or wires to computer doe's anyone know if a board is made for what i want? Thanks.

Trying to find please equation(s) to calculate the "elasticity", "stiffness" of a homotropic cantilever diving board. Am seeking some analogue of the spring constant of Hooke's law, F= -kx, for this 3-D system. I'm unclear about whether Young's modulus applies here given the force ( or pressure...

A point (X, Y) is picked at random, uniformly from the square with corners at (0,0), (1,0), (0,1) and (1,1). Compute Cov{X, Y}. I think of this as darts thrown at a unit square dart board. Cov(X,Y) = E(XY) - E(X)E(Y). I compute that E(X)=E(Y)= 0.5 using the integral xf(x). But I...

I am trying to solve a real-life design issue involving balance points. It's been a very long time since I've taken calculus and physics. I've search all equations for finding a fulcrum, and all of them assume the mass of the board used to balance is negligible. Here is my scenario: I have...

my boss wants me to start learning how to layout a board. i suggested that i should start learning orcad, but he said that he thinks that orcad is "a little old." he wants to pick a new layout program, one which is popular. what do u guys use?

A 1.2 kg board 2.0 m long is pivoted exactly at its center. A 2.0 kg box is at one extreme end. For the board to remain balanced, a 5.6 kg box should be placed how far away from the other end Homework Equations mass1(.5)(2.0)= mass2 (d) The Attempt at a Solution .357 meters

Hey guys, sorry if this is the wrong part of the site. I'm looking for advice on rigging up a custom electrical bongle. I would like to have a circuit board programmed to interact with multiple buttons and a led display. The problem is this...i know how to program, and i know how to wire and...

Hello guys, I am trying to find a technical diagram for a GCC XL20 printer. I am trying to get the 600 resolution to go up to 800 or 1200. They all use the same engines but I can't find the firmware or the utility to backup and flash the rom. they are flashabe. The roms are intel E28F800B5B70...

I currently have two custom PCBs that perform a variety of functions on signals to and from different sensors, including quite a bit of buffering. The PCBs are between the sensors and a PC104 SBC. I want to take the design to a more functional level by implementing as much of those two PCBs on...

Post the next step in the sequence: http://img9.imageshack.us/img9/2796/n36.gif I'm still working on a solution for this. As far as I see, the problem lies in discovering the rules of a game (I assume it is a game) that would produce such patterns in sequence.

Homework Statement A woman whose weight is w = 500 N is poised at the right end of a diving board with a length of Lw = 3.90 . The board has negligible weight and is bolted down at the left end, while being supported L2 = 1.40 m away by a fulcrum, as figure shows. Find Forces F1 and F2 that...

Could someone help by recommending hardware to mount a prototype board like this: http://www.protostack.com/index.php?main_page=product_info&cPath=1_2&products_id=3 to a metal box? I was planning on drilling some holes in the metal box, then somehow mounting the prototype board(s) using...

Homework Statement An 82 kg man drops from rest on a diving board 3m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him? Homework Equations F = mVf - mVi / t The Attempt at a Solution I have no idea where to...

Homework Statement A diver springs upward from a board that is 3.05 m above the water. At the instant she contacts the water her speed is 8.51 m/s and her body makes an angle of 75.1 degrees with respect to the horizontal surface of the water. Determine her initial speed as she leaves the...

Hey guys, I'm trying to make a circuit board for my school project and need to print the pattern. The thing that makes this slightly trickier is that some of the traces are 0.4mm apart. Now either way I need to print over twice, and that's not an issue, I can double layer it easily. I'm just...

Let's say you put a box on a board, like this. (the dot represents a fulcrum point). Let's say the center of mass is exactly halfway between the fulcrum and the edge of the board. http://dl.getdropbox.com/u/119319/board.jpg Now let's say you exert an upward force F in the direction of the...

Hi, This is not homework but out of curiosity. On a diving board where are the points where stress is applied? Including shearing, compressible, and normal stress? Thanks

Homework Statement 1) The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is d = 68.0 m. In part a the person is looking at the base of the antenna, and his line of sight makes an angle of θ1...

Hi there, I was just wondering if it would be possible to create a hover board by using sound. i have a vague idea on how it would work but would it be feasible or just a waste of time and effort or even if there are some out there already. It would work by using some speakers and a...