Bit Definition and 398 Threads

know a bit more about "petro-dollars" Think this is the right place for this thread but please move it if needs be wise mentor person. Just watched a really interesting programme about a conspircay theory on the iraq war. Just wanted to know abit more about "petro-dollars" but i haven't got...

I am just a home user, my PC is intended for internet, music, movie, graphic and word processing, so, do i need a dual-core 64bit processor?

Hi, a. A free-running, flashlamp-pumped Nd:YAG laser produced pulses having a duration of 500 microseconds at a repetition frequency of l00Hz. Deduce the pulse power in this type of operation if the average power of the laser is 5W. (100W) b. This laser is then Q-switched and the average...

Here's the item needing to be proofed (this is not homework, but I'm very interested in it). Show that for each odd prime number y, there is exactly one positive integer x such that x(x+y) is a perfect square. Thanks for any help/leads, etc.. -Steve

(This isn't a homework question before you ask- it just came up in something I was reading.) Am I right in thinking that a boat floating in water would float neither higher nor lower if the gravity were altered, as its mass would remain constant? Would the same remain true if an object were...

Secret codes are often needed to keep a message hid. Having numbers stand for letters was a trick they often did. So, instead of putting SOS in letters on a line. The secret letter writer wrote 1-9-1-5-1-9 But what if it was different and the numbers went to ground? If s-i-x...

hello Buoyancy is the upward force exerted on an object immersed in fluid, and upward force on an object in a fluid is equal to the weight of the fluid that was displaced. If this bouyant force is less than the weight of the object itself, the object will be left with a net downward force...

I'm having a little difficulty understanding a few key electronic concepts and am hoping a some of you may be able to shed light. 1) In a power source (i.e. battery) I understand that E = V / D. Despite the size and mass of an electron being incredibly small; when enter the field- do they...

Hello all, I was recently talking about the Seebeck effect with one of my colleagues, and we've run into a bit of a puzzle. Why are *dissimilar* metals required to produce it? All of the various sources I've consulted state very clearly there must be two different metals (or I suppose you...

Hi again :biggrin: , here's another one of my find picture questions. In the following picture I had a guy on one hand. Now, it says the ground reaction force is 1000 N and I have to resolve this force into it's vertical and horizontal components. One hand position My questions are...

I'm supposed to build a 4 bit synchronous up counter that counts in binary from 1-12 and restarts. I've made a circuit similar to the image shown below. My question is, what do i do to make it count from 1-12 instead of 1-16 and restart back at one...

hello Boy can physics be confusing :( change of velocity - delta (V) Short time period - delta (T) Change of angle - delta (alpha) Velocity - V Centripetal acceleration - a This I understand V = radius * delta (angle) /...

Well has anyone noticed it is a bit quiet upstairs? Have all the crackpots retreated? or is there nothinig new.

i have 7 data lines coming out from a microcontroller... i need the 8th one to control where its going to, either to a 7 input on a RAM chip, or a 7 input on an LCD display. basically i think I'm looking for a 7/8 bit switch... does one exist? can anyone supply me with the name of such a...

I went to visit my parents on Saturday and I enjoyed the early display of fireworks. I was sitting on the front porch with my mom and we were having a nice little conversation. A fairly heavy rain started, but there was absolutely no thunder. Then, the next thing I knew, a sound which I can...

I need to rant a bit. Very frustrated. :( Ok, today I had my mechanics exam (2nd yr mech eng). Half solids, half dynamics. I went really well on the solids part, I reckon maybe 70%? Anyway, I am just pissed off about the dynamics part. It was hard and very different to past years. This is...

Today is not very cool, it's hot. I went out with some of my friends to...look things. I went to a bush to see some strange flowers but when I got out, there are some black ant-like insects biting my arms. I went home and now looked again my arms, very very round red spots with black small...

this is the problem: A projectile is fired with an initial speed u and at an angle of elevation ®. The air resistance is known to be quadratic and the terminal velocity has a magnitude vt. Show that the equations of motion for the projectile can be cast into the form y' = f (t; y); t >=...

Hello, What is a good way to implement the logic for a 10 bit (10 to 1024) decoder? A method that is systematic, has low fanout, fanin, propogation delay, and capacitance is desired. It would be helpful if you could find some websites that implement this design. Thanks, James

Hey Everyone :) I'm trying to find out the year on which ~stocks cells~ has been discovered? I'm really not sure about the english word... but in french we call them "cellules souches". I've search a bit on google but couldn't find anything. Edit: Okay I found the correct english word...

I was finishing my chamomile tea...which was very yummy :biggrin:. As I finished the last swallow, I wondered if chamomile has any health benefits to it. Ironically I was wondering the same thing about green tea (also very yummy... :wink: ). How is that tea has some components in it that provide...

I am not really sure how to start this problem, and I have tried searching everywhere. If you could help me that would be great...just to know how to get started. I'm in 2nd Year, Intro to discrete mathematics, if it matters. Thanks Let G be a graph whose vertices correspond to the...

OK, in Calculus, in finding the derivative of y=(1+cos²7x)³ my textbook says the answer is -42(1+cos²7x)²cos7xsin7x. Where did they get the cos7x from?

I'm not sure how to do this: [3x-1/3 + x5/3y] / x2/3 this is what i did: [3 + x5/3y ]/ x1/3x2/3 [3+ x5/3y]/x the answer to the problem is the same as what I have except instead of x^5/3, its x^2. help.

I want to parse PNG format files, and I need to understand what they're doing with the bytes. Dropping a PNG into Notebook shows ASCII versions of the bytes. I need a small freeware viewer tool to examine the bits themselves. Can someone point me at something I could use? Also, while I am...

I'm having the biggest dilemma of my entire existence.I've just downloaded the "MiKTex" software,apparently succesfully installing it,but,as it wouldn't make a shortcut in the StartUp Menu (using Win98),I have no idea how to find the program itself,the ".exe" file. So,please,could anyone...

ok, so I'm doing a calc assignment, and the whole assignment is done except for one question, the rest of the answers check properly on my graphing calculator both with nDeriv and the tangent function. this question shouldn't be so hard, but i must be missing something. could use a bit of help...

Is the Galois group of F=Q(sqrt2,3i) the maps {id, tau , sigma, gamma}, where (1) id is the identity (2) tau maps sqrt2 to -sqrt2 and leave 3i alone (3) sigma leaves sqrt2 alone and maps 3i to -3i (4) gamma maps sqrt2 to -sqrt2 and 3i to -3i ? If so, the what are the fixed fields of the...

Anyone know of a site that explains a 1 bit computer made from logic gates, or at least what all is needed for a one bit computer (all I know is an ALU)?

A 14.0 kg block is dragged over a rough, horizontal surface by a 87.0 N force acting at 20.0° above the horizontal. The block is displaced 6.50 m, and the coefficient of kinetic friction is 0.300. (b) Find the work done on the block by the normal force. J (c) Find the work done on the...

The question is :"the length of each wooden block shown in the figure is L. How the wooden blocks should be arranged so that the total lengths of the two blocks that overhang the bottom block is maximum?" I actually more interest about the method you use to solve this question, i hope you use...

Hey, I am really interested in cosmology especially the acceerating vs. decelerating universe debate and I was wondering if anyone could help me out with what the implications hubble's law acutually are. I know that is states that somthing that is twice as far away then it is moving twice as...

Ok, here's the deal. I have a projectile motion project that goes a little beyond the normal "ideal projectile" problems. The project consisted of shooting a projectile from a device that, within a few percent, launched a projectile at the same initial velocity every time it is fired. The...

A bit weird magnetism problem... You see i have a problem... Assume the below situation in which there are 4 magnets above a wire and connected to a wheel of some sort. Now, once the wheel is in motion, Each set of the magnets have one strong and one weak magnet. In the first set, the strong...

mask = 0x80; for(i = 0; i < 8; i++) { if((testvalue & mask)!= 0) { cout<<"1"; } else { cout<<"0"; } mask = mask >> 1; } The code displayed was for displaying the bits in a char,however it doesn't work...

Hey there! This question has be a bit confused as to where to start--- Suppose you made a 4.70 k-Ohm resistor from a carbon resistor and a Nichrome wire wound resistor connected together so the total resistance is the sum of their separate resistances. What value should each of these...

A women is asked if she wants to win £100,000. She says yes. She is taken to a room full of flowers. She is told that the room has only one real flower in it. If she can find the one real flower she will win. There are too many flowers in the room to go through one at a time as she only has an...

Hey guys I need a little help with my physics project It's a private investigation, and I've decided that my topic would be: The rate the propeller spins vs. the angle of attack of the wind. Ive decided to change the variable by changing the angles the flap faces towards the wind (generated...

BIG BREAKTHROUGH, I proved Physics is wrong. Consider the following: If an object is thrown straight upward with an initial speed of 8m/s, and takes 3

When will intel come out with a 64 bit processor? I am excited about the prescot, but will it be 32 or 64 bit? And does anybody know if the prescot will be out this time next year? And does anyone know what the clockspeed of processor will most likely be this time next year?

hey, i did my undergrad in music and english and now am lost beyond reckoning with the impulse response stuff in my postgrad. Could anyone help with these exercises? They're examples from my lecture notes and have no idea how my lecturer got the answers. Please help? Ex.1) Show that x(t)*h(t)...

How difficult would it be to create a circuit that uses 3 mechanical switches as inputs to light up 8 LEDs for the binary combinations? This is for my electric circuits class. I've done one for Logic class, but I was able to use Logic gates and some other extra equipment. So any hints on...

Welcome to Java Class! We're going to learn a bit of Java here, one bit at a time, using real world examples to understand what we're doing. My aim is that all of the Java posted here is executable, so you can try it yourself. First, before you can make use of any Java programs, you'll...

Although on the whole my Boyce & DiPrima book is fairly good in of itself and compared with others, but of-coarse some areas are lacking. vt'' - 3v' = 0 I suppose I integrate twice, but then what?

Hi, As the subject indicates, I'm looking for a little direction. Its not actually homework help, but this seemed as though it would be the appropriate place to post this question. I am considering a major in physics, because believe it is something i would enjoy, because of certain things I...

Hey there, I'm lost with this one: Now, I know how to go about calculating the velocity of the center of mass (v(cm)= m(1)V(1)+m(2)V(2)/m(1)+m(2) The thing that throws me off is the j-hats and i-hats. How do I come out with a vector number? I thought of the pothagarem(sp?) therom, but...

Aoccdrnig to rscheearch at an Elingsh uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are. The olny iprmoatnt tihng is taht frist and lsat ltteer are at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae we do not raed ervey...

I thought I would try this one out for giggles. We obviously have a very intelligent group of interesting people here. I am wondering if we have a good supply of interesting, surprising, or amazing trivia. Here are a few that surprised the heck out of me. I am told that the most...