Multiple Definition and 1000 Threads

Just a curious question. How would the rate for a net reaction involving multiple steps of all similar (perhaps exact - i know it's highly unlikely) activation energies be calculated? I've been told to just look at the slowest step (highest EA) in all cases, even if they are similar in...

Suppose I write the following in my stylesheet .class1 { position: relative; } .class2 { position: absolute; bottom: 0px; } and then the following in my body <div class="class1 class2"> </div> Will that div take...

Hi. This is my first post so apologies if I do anything wrong. I have a homework question. *calculate the distance of the centre of gravity from support A for a framework containing 4 crates at 52kg per crate. I'll describe the diagram: A is on the far left. 3m from A are 2 crates stacked...

I am reading an article on wikipedia about ground state and it says - The ground state of a quantum mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the...

Hi, Are the multiverses that come up in some cosmological theories, e.g. inflation, in any way related to the worlds in the many-worlds interpretation?

I want to turn an axle or a wheel using multiple motors. With a single motor, sometimes the power is not enough. Is there any method to use two or more motors independently driving the same axle or wheel ? The idea is to have contributions from all the motors so that the axle or the wheel gets...

Hi there guys. As the title implies I'm trying to draw a trajectory on the screen (yes, this is indeed about programing :P) involving multiple sources of gravity. Here is my dilemma: Since I'm working with an update loop there would be no problem to just simulate an object and having it...

This dilemma seems to occurs all the time in so many different engineering problems. It seems impossible to optimise something with multiple parameters, for three reasons: There are too many possible combinations of these parameters to be able to simulate them all You optimise one...

Homework Statement A solenoid has length L = 2.0m, radius R = 28.0cm, field strength B = 2.7T. The field is maintained by superconducting wires, with cross section 2mm x 2mm, wound with a 2mm spacing between windings and 20 layers of winding. Use the result that the current is I = 215A. a. If...

Dear all I'm trying to find the separative work units (SWU) required to enrich isotopically Tungsten. I've come across the SWU equation (http://www.fas.org/programs/ssp/nukes/effects/swu.html) SWU = P·V(Np) + W·V(Nw) – F·V(Nf) where V(x)=(2x-1)ln(x/(1-x)) and x is the...

What exactly are the rules for conserving the currents in a circuit? If we have multiple emfs in parallel with each other, how can we figure out the direction and magnitude of currents in each segment of a circuit? It makes perfect sense to me for one emf, and for the most part with two I...

Hi, I am doing a physics project at school, which consists of recreating our solar system (with the sun and only 2 planets, Earth and Jupiter) with Visual Python. Then we want to measure the speed variation of the sun caused by both planets, to determine its period in a graph, which would allow...

$L: V\to V$ a diagonalizable linear operator on finite-dim vector space. show that $V = C_x$ iff there are no multiple eigenvalues ------- here $C_x = \operatorname{span} \{x, L(x), L^2(x), \cdots\}$ basically it is a cyclic subspace generated by x that belongs to V. edit: solved

It is well known that in order to solve diode circuits we must assume state of diodes, replace diodes with appropriate model (0.7V voltage drop) and solve circuit. Then we check result and if it agrees with initial assumption, we successfully solved our circuit. If we mark number of diodes in...

Homework Statement I'm trying to create a c program that will allow for multiple inputs for a simple linear equation, and will print those values. the program I've created only returns one valueHomework Equations y = mx + b The Attempt at a Solution #include <stdio.h> #include <math.h>...

Homework Statement A cord with a mass of 40g is tied between two supports with a tension of 19.2N. The natural frequency of the cord is 10Hz. Find the length of the cord a.1.2m b.2m c.289m d.34cm Using your answer from Question 3, how long does the wave take to travel from one end of the...

Capacitance -- combining multiple capacitors for equivalent C In the given problem, Ceq = C1C2C3C4/(C1 + C2 + C3 + C4) The answer says the equivalent capacitance is always less than C1 but I can't come up with thy. When I do this, I can't seem to prove that equivalent capacitance is always...

If I have a hot wire, the distribution of its temperature with respect to radius (from the center of the wire) and time follows the heat/diffusion equation. However, now consider two wires, or even an array of many such wires. Say we can ignore the z coordinate and treat them as a point...

How do i go about solving the following equation? (Attached) I am attempting to implement it into java. BUt i have not gotten any further than this: wavenumber = new Vector2f(0.0f, 0.0f); wavenumber.x = (float) (2 * Math.PI / wavelength); Wikipedia Info for Equation...

Consider a standard standing wave thermoacoustic setup with a stack at 1/4th from the end of one tube( the stack is a concentric type with a certain length. Note that I am not using a heated gauze directly) The stack is made concentric. One end is heated, the other is cooled. Sound is emitted...

I need an algorithm for LCM(k1, k2, ..., kn). Here's what I was thinking: any number ki that divides evenly into another number kj, set ki = 1 return k1*k2*...*kn I'm having trouble implementing it, though. int LCM(int* numsPtr, int size) { // assume size > 1 and that array only...

Hello I was wondering if some one can give me advice on how to approach these types of problems. I do horrible on these types of questions but do well on all other, any strategy helps. Homework Statement This is an example problem: Oxygen molecules are 16 times more massive than...

Homework Statement Which of the following is NOT true about an object having constant velocity? Select one: a. It has constant speed b. It is moving in a steady/fixed direction c. It has constant acceleration d. It might be at rest e. It might have a fixed position Homework...

In my project I basically need to plot 3D color coded surface graphs using MATLAB taking input from multiple .dat files (i have 1000 .dat files). In each file I have parameters x and y, and when I take multiple files, each having a different value of z, I can finally plot a graph. so does anyone...

In the main activity, I call one of the constructors: public Something() { //nothing initalized } public Something(7 variables) { ... (this.variable = variable) } public Something(10 variables) { ... (this.variable = variable) } I call the 7 variable one but the...

L = Ʃ rn x mnVn The general equation for calculating the angular momentum is given above, from what I understand would you use the rn x mnVn part of the equation for each particle, and then sum these values all together? This isn't a homework or coursework question, I study Physics as a...

I've posted to Stackoverflow and no one answers, and I've signed up for Khronos but it won't let me open a new thread for a question, so I was hoping maybe someone here knows something about opengl es 2.0. I've searched the internet for about a week now and ran into a lot of promising leads but...

Given a plane with three points, (0,−1), (2,0), and (0,1) with x-axis and y-axis connecting three points to make a triangle. Suppose this triangle represents the support for a joint continuous probability density Pick one of the following: The marginal density f(y), defined as ∫f(x,y)dx...

A 2.0 kg block (m1) and a 6.0 kg block (m2) are connected by a massless string. Applied forces, F1 = 12.0 N and F2 = 5.0 N, act on the blocks, as shown in the figure below m1 is on the left side of the system, F1 is pulling on m1 to the left; m2 is to the right, F2 is is pulling m2 to the right...

pi ∫sin^2(nx)/sin^2(x) dx 0 I tried using mathematical induction and did arrive at the correct result but was wondering if a better method could be used to solve it?

Hello guys, I want to ask if someone over here, might have a clue/link to MCQ questions regarding the following: Calculus, and topology. Algebra (not the basic stuff) Electromagnetism. I trying searching but found very few results, maybe someone have knowledge of such websites or...

Homework Statement I need to prove or show that this n-rowed determinant which corresponds to cosine multiple angle formula is in fact true using induction. The Attempt at a Solution First let ##a = \cos \theta## and suppose I have this n by n determinant. $$ \begin{vmatrix} &a &1 &0& \\...

In this problem I have drawn out the region specified and noticed two sets of parallel lines indicating to me that a change of variable(u and v) are able to be used to solve this integral. I decided that u=y-x and v = -2x-y then solving for x and y I obtain x= (u-v)/3 and y = (4u-v)/3 From...

Suppose I define closed sets and open sets in a single definition environment. Now I want to put two labels in the environment. \label{Open Set} and \label{Closed Set}. I have tried this and this doesn't cause any trouble and doesn't give any warning. But are there any hidden pitfalls in doing...

Consider a capacitor with 4 parallel plates and 3 dielectric insulators arranged like this...+I-I+I- The insulator in the center has an equal amount of + and - charge on each side of it so shouldn't the electric field across this insulator be almost zero? If I constructed this capacitor with...

i need to know how to calculate the inductance and field strength of a coil while another coil directly beneath it is turning off and coils under that are also turning off i also need to know how quickly the coils will turn off and if i can accelerate the process if it makes a difference the...

Homework Statement As shown in the figure below, a particle is moving in a circle of radius R with constant speed v. At some location, the particle is detached from the circle and falls with a parabola path to point A. What is the horizontal range x of the projectile?Homework Equations Writing...

Homework Statement This is an Optimization Problem, find the maximum value. P(R)=(E^2*R)/(R+r)^2 Homework Equations P'(R)=? The Attempt at a Solution I have the solution to this problem, and I can solve it, I just don't understand some parts. I tend to think that the...

Hello All, I'm currently working through a scenario in which the following occurs : An object of mass M1 (kg) approaches a rotating wheel at a speed of S1 (m/s) along a belt The belt is at an angle Th1 (degrees) to the horizontal axis The rotating wheel has a linear velocity equal to S1...

Hey guys. I have been theoretically playing around with a single phase full bridge inverter. What I wanted to do was determine the waveforms for the current going through each of the components (ie. the four diodes and the four thyristors). I assumed all of them were ideal. Since I have no idea...

Homework Statement A uniform disk with mass m = 9.27 kg and radius R = 1.42 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 344 N at the edge of the disk on the +x-axis, 2) a force 344 N at the edge of the disk on the –y-axis...

Homework Statement I need to normalize the following wave function in order to determine the value of the coefficients. This is from the basic finite square well potential. \Psi(x) = Ae^{k_{1}x},for \ x < -a/2 \Psi(x) = Csin(k_{2}x),for \ -a/2 \leq x \leq a/2 \Psi(x) = De^{-k_{1}x}, for \ x...

Homework Statement A and B agree to meet at a certain place between 1 PM and 2 PM. Suppose they arrive at the meeting place independently and randomly during the hour. find the distribution of the length of time that A waits for B. (If B arrives before A, define A's waiting time as...

Homework Statement What is the direction of the moment? A) along +x B) along −x C) along +y D) along −y E) into the page F) Out of the page Homework Equations T=rf The Attempt at a Solution I said out of the page because when I use the right hand rule, my...

Homework Statement "A gas discharge tube contains H 1 , H2, He 3 , He4, Li6, and Li7 ions and atoms (the superscript is the atomic mass), with the last four ionized so as to have only one electron. (a) As the potential across the tube is raised from zero, which spectral line should appear...

Suppose the concentration of a drug in the blood stream exponentially decays and is given by c(t) = a0e^-kt (0 is a subscript) where t is the time elapsed and a0 is the initial concentration after one dose. Further assume that doses of the drug are administered at time intervals of T. (a) After...

Greetings, I have taken a probability course a year ago; however my mind is a bit rusty and I cannot recall the concepts. I want to be able to calculate the probability distribution function for the following question: Suppose you have a tedrahedron with number 1,2,3,4 on respective faces...

Hello, is there a way to eliminate the possibility of a reaction having one single step? For example, the reaction NO_2(g) + CO(g) \to NO(g) + CO_2 (g) appears to me to be single stepped, but my textbook gives the reaction in multiple steps and does not elaborate on how the individual steps...

1. Two blocks of equal mass are each pushed (from rest) along a frictionless surface a distance d. The force applied to block B is four times that applied to block A. What is the velocity of block B, relative to that of block A, vA? a) 4 vA b) 2 vA c) vA d) vA/2 e) vA/4 2. What is the...

Homework Statement A chainwheel of a bicycle has a radius of .09 m, the radius of the smallest cogwheel (the “highest” gear) is .01 m, and the radius of the rear wheel is .35 m. At what rate (in revolutions per minute) must you be pedaling in order for the bicycle to have a forward speed of...