Board Definition and 288 Threads

Homework Statement The board's left end is fastened to a fixed support by a connection that is free to pivot. The board is supported to its middle on another fixed support point. A diver of mass 60 kg stands at the end of the board. (ignore the mass of the board for this problem) The...

I've noticed that at the bottom of each post it shows similar threads, and the matches are pretty good. Does anyone know how it goes about doing this? Does it summarize an entire thread? Does it use tags?

I've run an experiment on an active filter. I am using the NI Elvis prototyping board. The frequency response is taken with the NI Bode analyzer and I saved the output data in a text file. The Bode analyzer amplitude spec is give as 12 or 16 bits, how do I calculate the amplitude error using the...

Homework Statement A uniform diving board, of length 5.0 m and mass 53 kg, is supported at two points; one support is located 3.4 m from the end of the board and the second is at 4.6 m from the end (see the figure below). What are the forces acting on the board due to the two supports when a...

hello everybody i am glad to find this websit and hope its gona help i am student in my last year in betec deploma course and have to do my iva wot is my graduation project so i am willing to do wind speed indactor and i am stuck kn in converter to change the 8bits to 7-seg then to display...

Homework Statement A diving board oscillates with simple harmonic mothion of frequency 3.0 cycles per second.? What is the maximum amplitude with which the end of the board can vibrate in order that a pebble placed there to not lose contact with the board during oscillation. Homework...

I have this problem about two masses, but I am not really sure how to approach it.. Homework Statement A box of mass m1 is sitting on a board of mass m2. The board rests on a frictionless horizontal surface. The coefficient of static friction between board and box is μs. The coefficient...

If you are given two dice and a gameboard how would you figure out the probability of landing on each of the individual squares in one game? Since there are two dice with 6 faces you can make a few statements without much math: 0 possibility of landing on first square, (1/6)*(1/6)...

what is the most efficient way to pull voltage off a large dc bus(230-400) to power a control board

How far out on the diving board (see figure below) would a 58.6 kg diver have to be to exert a torque of 1110 m* N on the board, relative to the left support post?

Homework Statement http://i241.photobucket.com/albums/ff4/alg5045/MLD_2l_15_001.jpg A small box of mass m1 is sitting on a board of mass m2 and length L. The board rests on a frictionless horizontal surface. The coefficient of static friction between the board and the box in us. The...

In my A level physics class i have decided to find the amount of force required to break a karate striking board and relate it to how much force is required to break a human rib and a jaw etc The striking board is basically a board that has been cut in half so there is a snapping line across...

Homework Statement A 0.580Kg wood block is firmly attached to a very light horizontal spring. It is noted that the block-spring system (k=160N/m), when compressed 4.0cm and released, stretches out 0.9 cm beyond the equilibrium position before stopping and turning back. Homework...

An indestructible bullet 2.00cm long is fired straight through a board that is 10.0cm thick. The bullet strikes the board with a speed of 420 m/s and emerges with a speed of 280m/s. (a) What is the average acceleration of the bullet through the board? (b) What is the total time that the...

I'm about 2 weeks into A.P. Physics, and couldn't be more lost. The teacher told me just to jump into A.P. without taking regular physics. And here I am now, failing the class. Now I have decided to scour the internet, not for the answer, but for something to lead me into the direction. The...

Does anyone know how to make an infrared port for a board camera to transfer video to a pocket pc, the camera is analog with RCA output.

hello, I have a small 2x2cm board camera that I want to add video storage capability (about 10 seconds of video at VGA resolution). How much would this increase the size of the camera? and approximately how much would it cost. Thank you.

Homework Statement A 100 kg man stands on the left end of a 100 kg board 2 meters long which sits on a frictionless surface as shown. Where will the left end of the board come to rest if the man walks to the right end of the board and stops? http://pics-hosting.com/files/pexpnaxozyl1o2qins.jpg...

Board Games on the Computer... I've been looking around trying to find good PC versions of various board games that will work on Vista, especially multiplayer ones. I have had very little success. We have a working Monopoly and a working Risk but these both get rather dull and mindless...

Homework Statement After jumping up and down on a diving board, Roger jumps off the diving board. Hakim claims that Roger does work on the diving board because he supplies energy to it. Ludmilla claims that the diving board does work on Roger and supplies energy to him. Which one, if either...

Hi, I have a epson c88+ printer, I am trying to modify the Allegro A3977 Microstepping Driver, to move the incoming signal for the stepper motor and send it to 2 additional stepper motor drivers, so that I can run 2 stepper motors off that same signal. I have little experience in this...

I am looking for a small, less than 6ins sq computer, to use in a musical instrument, the board must be able to drive a good sound card and run on windows , if there is such a thing can you recommend one please.

Hi, My name is Tom. I am just learning about space and physics and how the universe works. I have a question and I am not sure if I am posting it in the correct place or not so please let me know if I am posting it wrongly. My question is about gravities relationship with the...

Hey guys, question: Sally is standing on a diving board. Her weight is 50 kg. The diving board is fastened to a bracket with bolts A and B, and the bracket is fastened to the ground with bolts C and D. Estimate the force of the bolts that are in tension (A and C) when sally is standing...

Homework Statement a 50 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force of 1500 N. If the diver comes to rest 5.0m below the water's surface, what is the total distance between the diving board and the diver's stopping...

i wanted to make a robot and have a circuit board of a desktop and the circuit board of the massively mini media player from tiger electronics,and i wanted to know how you can make the circuit board work and what can tell if it work to ? help would be appreciated

The laser is able to vaporize an Earth sized planet in about a second.

Homework Statement A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.0 g stacked over the 12.0 cm mark, the stick is found to balance at the 45.5 cm mark. What is the mass of the meter stick? Homework Equations netF = 0 netTorque = 0 The answer is...

Homework Statement Find the forces (Fa and Fb) need to support the diving board drawn below. Inlcude directions for each force. http://img171.imageshack.us/img171/4923/physicsisgayea1.th.jpg Homework Equations Don't knowThe Attempt at a Solution Was absent when we went over this type of...

Homework Statement A bullet traveling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through it, and it emerges on the other side at a speed of 210 m/s. If the board is 4 cm thick, how long does the bullet take to pass through it (in seconds)...

I need an external controller to program the ad9959 dds evaluation board instead of using USB port.

Homework Statement In how many ways can eight identical rooks be placed on an ordinary 8x8 chessboard so that no two are in the same row or column? In how many ways, if each rook has a different color? Homework Equations I looked at the equation n choose k (nck), but I don't know if...

[SOLVED] How far does arrow penetrate into board Homework Statement An arrow is fired with a speed of 21.0 m/s at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into the block before coming to rest relative to it. During this process the arrow's...

What an amazing computer assisted blackboard.

I wanted to post this in Homework but for some reason I can't. Does anyone know the formulas for these problems? An 82 kg man drops from rest on a diving board 3 m above the surface of the water and comes to rest .55 s after reaching the water. What force does the water exert on him? A...

Homework Statement A person of mass M is standing at one end of a board of mass m and length l. The board rests upon frictionless ice surface, and its mass is uniformly distributed along its length. The person now walks to the center of the board and stops. In terms of the given quantities...

Board on Ice 1. A person of mass M is standing at one end of a board of mass m and length l. The board rests upon a frictionless ice surface and it's mass is uniformly distributed along its length. Calculate how far from the person, d, the centre of mass is of the system. The person then walks...

Homework Statement http://math.stanford.edu/~vakil/putnam07/07putnam2.pdf I am working on problem 5. It is clear that the integers will not change if they can be totally ordered by divisibility, but I need help proving that they will reach such a state. Obviously after every step, the...

Homework Statement A uniform diving board, of length 5.0 m and mass 52 kg, is supported at two points; one support is located 3.4 m from the end of the board and the second is at 4.6 m from the end (see the figure below). What are the forces acting on the board due to the two supports when a...

Hey, I solved this problem but I need someone to double check it. Please and Thank you! Homework Statement A 70-kg diver on a springy diving board makes her approach. The diving board sits 1 m above the water below. As she approaches the end of the board she leaps into the air 0.5 meters...

Homework Statement Two people are standing on a very light board that is balanced on a fulcrum. The lighter person suddenly jumps straight up at . Just after he jumps, how fast will the heavier person be moving? Homework Equations M1*(Vf1) + M2*(Vf2) = M1(Vi1) + M2(Vi2) The...

is there much of a difference from economy and melamine? i plan on buying more than one and most likely will have them in different locations. links removed by me! thanks for the input :)

Homework Statement http://img487.imageshack.us/img487/2263/physicsqh1.png Shot at 2007-07-23 Homework Equations I=V/R V=IR R=V/I P=VI P=(I^2)(R) P=(V^2)/R The Attempt at a Solution Just a Quick Question, are both of the 3 Ohms parallel?? as well as the 6hom and the 12 Ohm...

Homework Statement The diving board shown in figure has a mass of 35kg. O = 65kg diver [1.2m] [3.9m] O -------------------- l l A B A) Find the magnitude of the force on the support A when a 65kg diver stands at the end of the diving board. B) Find the...

I took apart a Staples Easy button toy to see how it worked. Its very simple; attached to a circuit board there is a resistor, a capacitor, a button, and a circular black object that looks like a glob. The board is attached to a speaker and battery. So, something is telling this toy to say...

A diving board of length 3.00 m is supported at a point a distance 1.00 m from the end, and a diver weighing 550 N stands at the free end. The diving board is of uniform cross section and weighs 255 N. Find the force at the end that is held down. In part a, I found the normal force at the...

Homework Statement a uniform 12.0m long board has mass 500kg. it rest 5.5m over a cliff. How far can a 80kg man walk on the board before it tips? Homework Equations equilibrium and torque The Attempt at a Solution im not quite sure about any portion of my work, because i resorted to...

I noticed that the forum does not have a board for newcomers, so I'll try to make this as short and to the point as possible. Basically I've been teaching myself physics and its myriad of sister subjects for several months now through books and the internet alike. I love the subject, and plan on...

"A uniform board of length L and mass M lies near a boundary that separates two regions. In region 1, the coefficient of kinetic friction between the board and the surface is (mu1), and in region 2, the coefficient is (mu2). The positive direction is from the region with mu1 to the region with...

I am not really a circuits guru, but I am trying to find out the value of a potentiometer on a signal conditioning circuit board that consists of a Wheatstone bridge and an amplifier. I have attached the circuit diagram and an image of the board. I need to know the exact value of the...