Machine Definition and 968 Threads

Does anybody know if internet already does one or the following : 1) give the data of your wanted love and it automatically gives you the matching level (from names, salaries, bank account, physical datas, cultural preferences or even DNA)... 2) and composes the appropriate gift idea : poem...

I dislike simply having answers told to me, so I won't give the actual number values of the question. However, I need some insight on how I would solve this: There are two masses on an atwood's machine, but only one of the masses is known (let's say 5 kilograms). I am told that the unknown...

http://news.nationalgeographic.com/news/2005/11/1111_051111_junk_patent.html

How do we learn? And in the same way can a machine learn?

Thanks for the input!

Tipler5 6.P.060.] A simple Atwood's machine uses two masses, m1 and m2 (Figure 6-38). Starting from rest, the speed of the two masses is 5.0 m/s at the end of 3.0 s. At that instant, the kinetic energy of the system is 90 J and each mass has moved a distance of 7.5 m. Determine the values of m1...

An atwood machine holds two masses at its ends by a massless rope. m1 and m2. Assume the pully is frictionless. What will the magnitude of the tension(T) go to as m1 goes to infinity but m2 stays the same? Im very lost on this problem. I have drawn a free body diagram showing m1g and m2g...

the incredible lifting machine heat loss?? While stumbling upon this website on the Incredible lifting machine, http://tigre.ucr.edu/dipen/phy11/heat.htm I was wondering what could be some of the reasons why the work down calculated as in mgh does not equal to the work done under the pv...

hi there i was just wondering could anyone please explain to me the concept behind a "SWINGING ATWOODS MACHINE"-i mean as to why it works that way!"? I really want to know the concept! thanks fahd!

Can there be such a thing ? at work there is a machine that constantly has breakdowns that defy logical explanation, human intervention has been ruled out as there are cameras in the room, and the only way the breakdowns could be man made is by some with tools and access to the machine

This makes for an interesting mind experiment: http://www.geocities.com/osiris_dionysus1618/ppmmach2.GIF Ultimately the energy comes from the magnetic fields that deminish.

ok a friend and I came up with this hypothetical situation, and we both believe totally different things about it and I am positive I am right, but I suck at explaining stuff so if anyone can tell me if I am wrong or if I am right, can explain it better than I can? ok here are the two...

anyone know of any forums discussing abt above issues?

second type perpetual motion machine is existent . miaobo Let us assume that a system make a circulate of thermodynamics ,if we can approve that entropy will not equal to 0 , so the second law of thermodynamics is wrong ,and the second type perpetual motion machine is existent . The...

A machine gun fires 60 gram bullets at 360 bullets a minute. If the velocity of the bullets is 600ms^-1 , then what is the average force on the machine gun? How to do this? I have no idea at all. Thanks.

Here is my problem, A washing machine has a weight of 975 N. It requires a minimum force of 350 N to move it along a tile floor. What is the coefficient of static friction between the washing machine and the tile floor? This is the equation I used to find the coefficient of static friction...

An Israeli scientist proposed a time machine that does not need exotic materials. See here

integration of Dear people of this section. Suppose you have two indepenfent functions x and y and we need to find the integral of the following expression y dx ,and y does not depends upon x, but y varies between 4 and 8 in the interval of integration. ¿ Do you think that the value of the...

i am just about to start to engeneer and construct a "goldburge machine". goldburge was a cartoonest who drew complex machines that accomplised an every day task like brushing one's teeth. i would like to hear from anyone who has done something simmilar. please include some success, failures...

I'm given a state diagram and I'm suppose to only use JK FFs (no gates) and an EPROM to implement the state diagram. How do I do this? I have no clue how the eprom and ff will hook up together. If I can figure that out i would have no problem on the eprom programming part. ASAP please...

hi, how to determine the machine precision in MATLAB and estimate from this how many bits are used in the mantissa ??

Evo, this might be handy for those difficult clients. :biggrin: http://www.newscientist.com/article.ns?id=dn7304 "It is possible to read someone’s mind by remotely measuring their brain activity, researchers have shown. The technique can even extract information from subjects that they...

Which normal kidney functions should not be replaced by a dialysis machine? I've got one answer...but not enough. I don't even know if this is right, but I said blood pressure - patients with heart problems. Can anyone help?

Today I was walking out in the woods. In many places in the woods around here you can find old stone walls going between the trees. Today by one of these stone walls I found a piece of farm machinery. It was heavily rusted and the rubber tires were flaking. It was ten or fifteen feet wide...

The machine shown in the figure below can be used to give you a good feel for forces. Assuming a massless, frictionless pulley and a massless string, calculate the magnitude of the acceleration on both bodies and the tension in the string T...

Hi everyone, Does anyone of you believe that time machines or timetravel is possible because if it were possible we would already be familiar to one. Because someone would have traveled back in our time whom we could have seen. This has only one explanation that the man who...

Three related brain teasers:(I did not see them posted before) There is a mint, let's say the Denver mint. In the mint there are 100 penny making machines. In the problems below there is something wrong with one of the machines. You may produce as many coins as you would like from any of...

In the Atwood machine regular 2 mass machine,m1= 2.20kg and m2=7.30kg . The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into motion at an initial...

Need a check on this one please. In an Atwood Machine simulation, m1 is 1.0kg and m2 is 1.1kg. m2 rests on the floor that exerts a normal force, Fn, on m2. when the system is in equalibrium, the tension, T, in the rope at 2.54s is 9.789. If Fn +T- m2*g = 0 then Fn = .991. Is this correct?

Sure anti-gravity technology is possible in your garage. Bet for $1,000? and will send you the design. Anyone else interested. Russ? $1,000? Edit by Ivan: Split from https://www.physicsforums.com/showthread.php?t=50321&page=3&pp=15

ok, so here it is: "You are to design and construct a bean bag launcher, which will launch a bag filled with dried beans, rice etc. Beanbag launchers will launch their projectiles through the ait in an attemp to have them land in a large coffee tin. The coffee tin will be mounted at the top...

Figure 8-20 http://www.webassign.net/walker/08-20b_alt.gif 14. [Walker2 8.P.025.] For the Atwood's machine shown in Figure 8-20, suppose that m2 has an initial upward speed of v = 0.17 m/s. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 =...

Here's my main problem to concieve a bobbin machine... I've got an electrical motor which provides a constant rotating vitess.. and i want, in the end, to make the bobbin rotating and assuring a constant tension on the wire. If you have any idea of a simple mechanical system to do that...

any evidence in time travel guys? id like to hear your theorys, weather scientic ones on wether it exist or how it doesn't exist, and can never exist. I personally believe you can never go backwards or forwards into time and live in it. I think if we went faster than light, the light would bend...

I'm just curious, why is it that anye perpetual motion machine that is thought up is discarded immedietly. I know that energy can't be created nor can be destroyed but then again, a few centuries we were absolutely positively sure that the Earth was flat! I mean anything can be wrong, why...

It seems logical to me that consciousnes existing at the molecular level (cells) strongly implies that consciousness exist at all levels of matter, including atomic and subatomic levels

well, I have tried many ways to get the solution to this problem, but i have two great obstacles: We have atwood's machine with to masses m1 and m2, machine is accelerated upwards with an acceleration a. Find accelerations a1 and a2 for masses m1 and m2 respectively and find the tension...

I have a question...When you take times/measurements in lab, is the %difference supposed to be 40-50%? That seems like a lot to me! My lab partner took the measurements and I am suposed to do the calculations at home, but I am getting huge % difference for all but one of the 5 trials! We are...

I am having difficulty solving Problem 105 of Chapter 4 from Physics for Scientists and Engineers, 4th edition by Paul A. Tipler: The pulley in an Atwood's machine is given an upward acceleration \overrightarrow{a}. Find the acceleration of each mass and the tension in the string that...

Now that I am fully immersed in my Philosophy 110 resitation class every friday, I tend to leave class asking many questions about the discussions we had during class. We were discussing something known as the 'experience machine' and the scenario is as follows. Hypothetically, there is a...

http://www.physics.uconn.edu/~mallett/ Does anyone know the latest on this?

I would like a few ideas about a project of mine. Any help would be greatly appreciated. Design a human-powered machine of some kind. Describe the simple machines used in your design, and tell what each of these machines does. Thanks!

I had a broken fax machine, and we finally found the book, after a month of looking. It said not to use a longer than 6 ft cord... Why? We replaced our 20 ft. with a 5 ft., now it works... hmmm :confused:

return of the incredible machine: contraptions its a new computer game I am getting today... its a puzzle-type game where you have you design your own "inventions" with objects your given in order to complete the required objective. anyone ever play it? sounds fun.. thought i'd ask you guys...

I need help converting my X-box to the Marsahll & Morphy XJX 24 hour time machine. How do I install the anti gravity chip without a static discharge, I've tried everything from Zykron static discharge units to David Blaine levitation ? Also I need a cheap Quad sync time pulser crystal tx

I was given this problem below in my physics homework. :cry: http://www.turbozcar.com/images/knight.Figure.08.40.jpg It wants to know the acceleration of m1. I couldn't figure it out, so the next day a friend in class gave me the answer to be: (2*m_2*g)/(4*m_1+m_2) I took that...

Need closure (if not guidance) on this problem also: An Atwood machine consists of two masses, m_1 and m_2, which are connected by a massless inelastic cord that passes over a pulley. If the puley has radius r and moment of inertia I about its axle, determine the acceleration of the masses...

Can u wash sneakers in a washing machine?? I have no clue how to wash shoes. Staying by myself is sooo damn hard... :mad: Is it ok if i just dump them in a washing machine.. some people say i should but others say its a really dumb idea.

Voyager the real time machine have we received a message yet? Would you know how to find the massage if it was here? I will return to finish this. http://voyager.jpl.nasa.gov/ spacecraft /goldenrec.html Many Thanks, Dj Blair Styles. 11:11

Can one harness gravity mechanically? meaning, in a frictionless universe, can we have an object undergo the forces of gravity, extract energy via a generator (ex. mass falling onto a spring which generates electricity), and reciprocate this while also producing excess energy? Is this possible...