Machine Definition and 918 Threads

Homework Statement:: I'm trying to figure out what miles per hour setting I need to use to simulate a pitched baseball traveling 50 miles per hour from a distance of 46 feet. I need to know the equivalent speed setting on a pitching machine to simulate the same speed at a distance of 36 feet...

I am dealing with restricted Boltzmann machines to model distributuins in my final degree project and some question has come to my mind. A restricted Boltzmann machine with v visible binary neurons and h hidden neurons models a distribution in the following manner: ## f_i= e^{ \sum_k b[k]...

Do you guys have techniques in solving for the Force in hydraulic IJ? I've been stucked for a while now and I can't seem to find the answer.The question says the answer should be = 11, 051.9516 N (T).

r = 2.5 l=10 cm angle = 0 (maximum connecting rode elongation) w = 0.5 (30 rpm) n=10/2.5 = 4 so the acceleration is 1.5×0.5×0.5(1 + 1/4 ) = 0.4 m/s friction force = 10*9.81*0.3 = 29.4 Newton. Crank force is the mass of the object into acceleration. So crank force = 10 × 0.4 = 4 Newton...

Dear friends i am using tensile test machine, tinius olsen 602 to conduct a tensile test for Glass-fiber composite. i am facing problem of using an extensometer from Epsilon (gage length is 25 mm). I have connected the extensometer to the tensile test machine(tinius olsen 602) through the...

This is a not very physics-related question, but I suppose fixing mechanical things involves a bit of physics, so I thought I might as well ask here. I have a Marcato Atlas 150 pasta machine that has stopped working. The crank won't turn because the rollers won't turn. The crank directly drives...

The first career that I tried to have was as a mechanical engineer. I majored in mechanical engineering at a university, but I failed out of the university. I've always been curious as to exactly what most mechanical engineers do most of the time. I imagine that the vast majority of the...

i have tried to understand Feynman's words i think i finally understands what he means by "we must add a little extra to get it to run" he refers to the "inversion" of the process, that's when we need to add extra work (lifting up a little mass) please correct me if I am wrong, this is something...

2010 210F Can only get this far without running into issues

I have problem on this question on how to draw free body diagram. Can you please show me on how to draw free body diagram on this question ? The calculation part I think I do not have a problem with it. Thank you in advance ! I am really struggle with this question.

I am attempting to solve a rather simple induction problem in Maxwell3D that I have solved before. But this time when I run it I am getting this error and can not seem to find a solution in ANSYS? I am running ANSYS Suite 2020 R1 Thank you in advance if anyone has a possible.

Here's my attempt for part 1a: What I am not sure about is the direction, is it in the opposite direction (= - 458.37 N.m ) or it's positive? Thanks,

Suppose you have an experiment of 2 possible outcomes 0 and 1 with probabilities p and 1-p respectively. I've been told in University that Restricted Boltzmann machines (RBM) can be used to infer probability distributions so I guess that one could built a RBM in order to infer p in the example...

Say a person is infected with disease X. I suspect that it's possible for computers to learn the behavior of X via machine learning. This would lead to greater understanding of X. The unsupervised learning approach is pertinent to this. For another approach, say a new medicine Y is being...

I'm struggling with my Final Degree Project. I would like to perform a quantum simulation and perform quantum tomography for a single-qubit using a resrticted Boltzmann machine. In order to do so I'm trying to follow the recipe in the paper "Neural Network quantum state tomography, Giacomo...

What is the limiting factor for a liner and it's implosion in a Z type machine? I wonder have they tried or is it possible to use liners that have a larger radius and contain more gas or gas under higher pressure aka more dense? Are the dimensions of the liner so small because having a larger...

Hi. There has been a fair amount of research into electric generators and motors with superconductive coils. If traditional iron cores is used that obviously limits the power density because of the iron cores magnetic saturation point. But for coreless/ironless designs i don't understand what...

Summary:: Just want to know if I'm on the right track with this question. Hi, so this is what I have for my assignment: A washing machines drum is rotating rapidly about a vertical axis (a so-called toploader). A wet sock is stuck on the inside, halfway up the drum, and the drum begins to slow...

1-->2 (adiabatic) $$P_1V_1^γ=P_2V_2^γ$$ $$P_2=18,4.10^5Pa$$ $$T_1V_1^{1-\gamma}=T_2V_2^{1-\gamma}$$ $$T_2=429,32K$$ 2-->3 (isochoric) $$\frac{P_2}{T_2}=\frac{P_3}{T_3}$$ $$\frac{18,4.10^5}{429,32}=\frac{P_3}{T_3}$$ 3--> 4 (adiabatic) $$P_3V_3^{\gamma}=P_4V_4^{\gamma}$$...

First post here, thanks in advance... It may seem like xrays aren't something to play around with at home - but that's not my intent! I just need to get some paperwork done (no, it's not homework...). Does anyone have any insight into this question - or know of an expert source I could...

I'm trying to build a Van de Graaff generator, but it does not generate any charges. The problem is, I don't know which part is accidentally shorted, or grounded. I use both PVC pipes for the top and bottom rollers. The belt is neoprene rubber, 1mm thick. The rollers are bolted on aluminum...

Now that we have quantum computing how long before someone builds an AI ML system that can predict the future?

Hi. First of all i have a question regarding a simple Atwood's machine. The pulley has no mass and the string has no mass and is inextensible. If one pulley is suspended from a fixed support and it has 2 masses ; one at either end of the string. If i construct a free-body diagram of the pulley...

Assume m2>m1 and take positive direction as downwards. String is inextensible so acceleration of block up = acceleration of block +pebble down =a I used the following 2 equations to obtain a ; -m1a = m1g - T , (m2+m)a = (m+m2)g - T which gives a = g(m+m2-m1)/(m+m1+m2) I then...

I understand everything in this equation except for the summation. I understand it's the average error over the sample. But why do we need the "1"? Moreover wouldn't the error be the absolute value of the hypothesized value minus the concept value? Meaning | h( x_i ) - c( x_i ) | because you...

I know that moment is distance vector x force vector x the degree between them. I understand it uses the moment about A to solve for the unknown force R. I don’t understand why it use Rx1.2m and why the perpendicular distance between A and R is 1.2m. could anyone please explain why? Many...

Hello, I started studying machine learning and its basics. One of the applications of supervised learning ML is classification, i.e. identifying different objects and classify them. Being supervised means that the ML algorithm is initially served labelled data. The labelled data is used to a)...

How is it possible for a welding machine to end up creating more power than what it started with if that is physically impossible? For ex; 200 amp @ 28vdc welding machine. starts out with main voltage being 120v @ 20amps = 2400 watts then converts it to 200 amps at 28vdc which = 5,600 watts of...

Summary:: I have solved the question but I'm getting answers wrong, some reaction equations seems to have trouble. Question: Let m1 = 1 kg, m2 = 2 kg and m3 = 3 kg in figure. Find the accelerations of m1, m2 and m3. The string from the upper pulley to m1 is 20 cm when the system is released...

the washer is a front loading type with axle of the drum going from the center of the front door to the back of the washer. the axle is close to horizontal. the pedestal is made for the washers and has a drawer in the bottom. the washer is firmly attached to the pedestal, essentially bolted...

i placed a emg pad on my elbow and 2nd emg pad on the part of my forearm near the elbow and a 3rd emg pad on the part of my forearm near the hand. i connected the 2nd emg pad to a wire, which was connected to the red prong and 3rd emg pad to a 2nd wire which was connect to the red prong. so both...

In this NPR podcast (Planet Money) they describe how the cheaters figured out the pseudorandom number generators in a certain model of slot machine. I found it interesting and entertaining.

Hello everyone! I am trying to replicate a folding machine, just as a fun project for home use. I understand this simple idea of a folding machine, and I know which measurements I should take. The question behind this project that I simply can´t understand is the spring linear clamp which...

Hello, I hope you are very well ! I have a physics practical test where I have to find the gravitational acceleration with the Atwood machine: I've found 9.27 m/s² and have to say what could have caused this slight gap. They say that there is no friction in this experiment. I can't really...

module fsm(input clk, rst, fifty, onedollar, output insert, dispense, reject); reg [1:0] st; wire [1:0] nst; parameter ready = 2'b00, s1 = 2'b01, dispense = 2'b10, reject = 2'b11; always@(posedge clk) begin if ~rst st=ready; else st=nst; end assign...

I solved for a1 prior to the force (f) being added. -a1 = a2 and T = m1*a1 + m1*g T = m2*a2 + m2*g <--substitute -a1 = a2, multiply everything by -1, add the two equations in order to solve for a1 (and thus also a2) T = m1*a1 + m1*g -T = m2*a1 - m2*g 0 = m1*a1 + m1*g + m2*a1 - m2*g...

Imagine a massless (or very light-weight) charge that is glued to a rod undergoing sinusoidal motion along an axis. The acceleration of this charge produces electromagnetic waves, which can be harvested for energy, and this energy can be used to power the continued sinusoidal motion as well as...

Maybe you can please give advice. I have a coffee roaster here in New Zealand I would like to bring to the US. It is 400 volt 3 phase 16 amp. It has a blower, a heater and computer components to run it. It is like a very large popcorn machine. Can this work in the US?

Attached is what I have so far. I believe it is done but I am not 100% sure. It seems to me like every case is considered. For each state, and output of a,b, or c is possible.

Hey! :o We have the number \begin{align*}70&6737922567786324304462189150536772513339293263220644 \\ &=2^2\cdot 3\cdot 59^5\cdot 103\cdot 149^2\cdot 353\cdot 607\cdot 823^4\cdot 1409\cdot 1873^2\cdot 4201^3\end{align*} I want to check if this is a Gödel number of a Turing machine. From...

Hey! :o I am looking at the following: The Turing table of the following modified Turing machine is given: Change this into an ordinary "Turing machine" (i.e., one that either writes or moves the head). Give the appropriate Turing table. Give also the Turing table of an equivalent...

Setting aside whether this works or not, can someone here compute the output in watts-?

[Mentors’ note: Elaborate explanation of unworkable perpetual motion machine removed]

Summary: Single shaft copper shredder I design a rotor of a shredder, but i need to find a motor for the rotor of the shredder. My questions are: 1. What is the best rpm for a copper shredder ( what kind of effects wil the shredder have on high rpm 1200-3000, lower rpm 300-1200 ) 2. what...

As the description says, I want to make something which moves 2 heads on a 3-axis basis. The heads will ideally rise from the flat top of whatever contraption will be needed - it's not an option to have one rise from the bottom and the other descend from above. Aside from the obvious collision...

So I am trying to design a beach cleaner machine in Ontario for my project... As part of it I have to research codes and regulations needed to implement it. I can't seem to find any regulations in Canada regarding beach cleaners, are there any?

Hi, I am trying to create residue 3 automata using Moore. I can't understand why we go to state q1 when we have input 0 in q0 and similalry why we go to q2 when we have input zero in q1. I have attached an image of FA. Some body please guide me. Zulfi.

This is how I solved part a) : ##Q_1=C\cdot (T_1-T_i)## This quantity is negative because object 1 loses heat. (positive for the machine) ##Q_2=C\cdot (T_2-T_i)## This one is positive because the object 2 absorbs heat.(negative for the machine) Then the exchanged heat FOR THE MACHINE is...

Hi all - I'm not an engineer or even very good at physics, but I was hoping to learn about something I'm interested in. I bought a ball pitching machine that I've outgrown and I'm wondering about either modifying it or even building my own and wanted to know about some of the key principles...

Kindly see my attached Moore Machine. Is it correct? Zulfi.