Output Definition and 1000 Threads

Homework Statement a) An electrical device stores energy in a 1.25 x 10^-4 F capacitor at 220 V. How much energy can be stored in this device? b) If 1.25 J were released from capacitor in 0.25 second, what would be its power output? I believe I solved (a), but I cannot find out how to...

Homework Statement a person ran 100m in 9.69 seconds. assuming the acceleration was constant, what was his average power output during that run in watts? Homework Equations P=Fd/t or P= change in energy/t The Attempt at a Solution i don't actually know where to start... i know i...

Sir/Madam, what is out put of glucose+water?is it possion? can i store this in packets? how long? if i combine "water+glucose+citric acid+carbon dioxide" what's the output? which taste i get?

hi, I am working on a small solar cell project for which i bought two small solar cells panels of 6volt each producing current of 5.263milli ampere in combination. I want to know that how can i calculate the values of solar cells output in kwh, on the output i have placed two bulbs of 3 volts...

Hello, I have currently written a Fortran 77 simulation program that I need to display graphically for each timestep. So far it calls the system to have gnuplot open an include file that has the gnuplot script to plot from my data files and produce a jpeg. What I would like to do is have it...

So the MOSFET's output current in a simple buck converter with a PWm a driver and a MOSFET and LC circuit. The Inductor's saturation or Irms current limits the MOSFET's current output, correct? I heard that if it exceeds saturation current that the MOSFETs could be damaged. is this true...

Hello, :smile: I did an experiment on full wave rectification using center tap transformer. The transformer read: Input 220V, Output 12V, 12V. I used two diodes and 1 micro farad capacitor. As you see capacitor's capacitance is very little so it didn't effect the overall output because I...

Hi, :wink: In the link given below circuit #1 and #2 are same except that they have opposite polarities for the battery V. On the left bottom there is output waveform after the clipping. In the beginning I was thinking that output for both circuits, #1 and #2, will be same. But now I am...

Hi all. I need more brain power than I can muster. This is a two part question for a software function I need to write. I'm trying to 1) pre-determine how many n% unique ways there are to intermix items from various lists and 2) produce output of only combinations that are n%...

I saw an example where the work of a heart was found to be 2 watts based on the height of a person and the liters of blood that it pumped throughout the day. Since we have closed circulation systems (unless we have a cut, annerism, etc. ) I thought height would not matter, and in order to...

I have designed an opamp based on thfollowing square wave setup http://www.national.com/ds/LM/LM124.pdf on page 11. I want to know what i would have to adjust to lower the frequency to the range of 10 hertz, it has a 5 volt input and the frequency range is at 10 Ghz I believe. any help would...

Homework Statement Hello, I did the following measurement: A piezo element (mass approx. 50 gram) is fixed onto a vibration shaker The force exert on the piezo, 0,124 N (rms) is measured with an impedance head The vibration frequency (sinusoidal signal) is 142,4 Hz The acceleration is...

Basically as the title says, what type of fusion would give the highest number of neutrons for a given amount of power. Also am I correct in assuming that most fusion methods will always produce more neutrons than other neutron sources such as americium-beryllium? (There are probably some...

Homework Statement Write a code with the following functions: Function 1: print a list of 4 different type variables input and output: character, integer, float, and double. Function 2: prompt and return an input character. Function 3...

Homework Statement Calculate the output impedance of the emitter-follower circuit called a pass transistor. Assume that beta=200 **See attached diagram** Homework Equations The Attempt at a Solution Not really sure how this works, I thought it would just be 1k cause that is the...

Homework Statement Hi! I'm currently working on my school project, for which I've constructed a tesla turbine, and to complete it I'll have to make some calculations on the efficiency. As I don't want a efficiency result that depends on a generator I've decided to mount a flywheel...

[PLAIN]http://img705.imageshack.us/img705/1016/20481574.jpg Is there any way of reading the intercept and the slope of the least squares regression line from the R output here? Also assuming the simple linear regression model Y=\beta_0+\beta_1 X + \varepsilon where \varepsilon \stackrel...

i am trying to plot the output of a function given the transfer function and an input. however, i am having trouble with trying to express the input as a function in MATLAB my transfer function is m = 1; b = 2; k = 1000; num = [ 1000 ]; den = [ m b k ]; transferfunction = tf(num, den) so it's...

Hi all. I have a 4 input circuit (ABCD). I have 7 outputs that accompany this circuit. Now, I have tools (like Karnaugh maps) to solve for Standard Sum of Products (or Product of Sum) form for individual outputs. I have the minimum of each output based on the Karnaugh map. However, I want...

Develop an application that reads city, state, and population from a text file. Example input census file: Jamestown FL 50000 Domville CO 10000 Jennyboro FL 30000 Lillyville CO 5000 If the population of the city is greater than or equal to 50,000, write the city information to a text...

Homework Statement A car battery with 12V EMF charged to 120amp hours. Assume potential difference across terminals is constant. How long can the battery deliver energy at a rate of 100Watts. Missing is current (i), internat resistance (r), and real voltage (Vr)Homework Equations (Amp...

Develop an application that reads city, state and population entered from the user and writes this information to a file. The application should continuously prompt for this population information until terminated by the user. Example file: Jamestown FL 50000 Domville CO 10000 Jennyboro FL...

Hi there, I have completed my analysis in BEM. The results gives me velocity potential in form of 37954305E-04 +1.58625295E-06 +2.10275811E-07 +... I have real scattering values, imaginary and absolute scattering values in this form. I am new to the method and from a different...

Hello all, I'm an electrical engineering tech student working on a little side project and I can't find anything to help me with a crucial part. I have a gauge cluster out of an automobile that I want to interface with a computer to used while playing a racing game. I have a computer...

Hello. I have a question about Mathematica. I have a series of files named P1.txt, P2.txt, etc. Each file contains 200 pairs of coordinates [x,y]. I want to write a loop that would import each of these files in turn, process them with NSolve, and then export the output files as Q1.txt...

Homework Statement How do you measure the output of a voltage divider with real voltmeters that have effective resistances Homework Equations The Attempt at a Solution I know that for an ideal voltmeter (one with infinite resistance), the voltage divider is R2/(R1+R2), but I...

Hi guys, I'm new to the forum, I'm a mechanical engineer but running a project a little outside my comfort zone which is to do with optics. I am trying to calculate the power density of a pulsed Nd:YAG laser but am getting in a muddle with the Average and Peak powers. The project is to model...

suppose an amplifier with V+ is 2.5 volts and V- is not connected...V- and Voutput are connected by a resistor. what is the voltage on the outpout of the op amp?

hey guy I was wondering if there was any way to increase the amperage output of an ac to dc converter, it is a 120v ac input that outputs 13v dc at 3.42 A. is there any way to boost this output? P.S. Ya'll are the best, This is by far one of my favorite places to be on the web. kudos on a job...

Hey Guys, Does anyone have a general idea of the circuit needed to generate a composite video signal?

Hi there, I've been puzzling over the following code (which works in serial). It produces radically different answers if the (blank) WRITE(*,*) is included or not. Any help greatly appreciated! eps = 0.0 !$omp parallel do default(none) private(i, j, current_angle, current_energy) &...

Homework Statement Draw the path of two parallel incident rays in a beam expander composed of two convering thin lens, with the first lens having a focal length less than the second one (f1 < f2.) Kind of what the problem looked like. The distances between the two parallel rays (the beam...

Homework Statement I have polynomials of the form: x1 + x2 + x3 + x1x2 + x1x3 + x2x3 + x1x2x3 The x's can be a combination of 1s and 0s, so all the possible inputs could be written as strings: 000, 100, 010, 001, 110, 101, 011, 111 The polynomials can also have coefficients a...g, so...

Homework Statement Input and system response is as follow: x[n] = r[n] - 2r[n - 1] + r[n - 2] h[n] = \delta[n - 2] The output is: y[n] = u[n - 3] Is that true? Homework Equations The Attempt at a Solution I draw the h[n] and x[n] and they looked as follows: As for...

Homework Statement The hot reservoir of a heat engine is steam at 100 Celsius while the cold reservoir is ice at 0Celsius In 1.4 hours of operation, 12 kg of steam condenses and 60 kg of ice melts. What is the power output of the heat engine? Homework Equations Efficiency =...

greetings, when a transistor in common emitter configuration is given a ac signal with base current,the amplified output form from collector of it gives inverted polarity of the input voltage or the output graph of voltage versus time gets inverted of input graph of voltage versus time.how is...

What is the output of the op amp when either Vcc or Vee is not connected. I simulated this and got Vsat. +Vsat when Vee was missing and -Vsat when Vcc was missing. But I don't know why the output saturates to +Vsat, even in a inverting configuration. Shouldn't it go to ground, since the...

Homework Statement A 39.5 uF capacitor is connected to a 47.0 ohm resistor and a generator whose rms output is 25.2 V at 60.0 Hz. Calculate the rms current in the circuit. (also asks for voltage drop across resistor, capacitor and the phase angle for the circuit, but I mostly want to get...

I am trying to set up some realistic conditions for a game I am designing, and need a bit of help. I am speaking very generally in this context. What are the percentages of mass released as usable energy in a uranium fission reaction, a D-T fusion reaction, and a positron-electron annihilation...

Generator output question... Hi there, If I were to drive an electric generator from, for example, a 200Kw petrol engine, would the output of the generator also be 200Kw, or would I loose some power along the way? And if so, why? Many thanks.

Hi, This is my first post on this forum, just joined. I recently purched the S3 Spyder III Arctic portable 1W laser from wickedlasers. I bought it to try and make some cool photographs and photoshop them. After testing the device (glad I bought safety goggles with it) I was wondering how hot...

An object with a mass M is rotating around an axis, with an arm of radius R at a certain speed V. Assuming that the movement is constant, and a 100% efficiency, how many watt of electrical power can this device generate ? For example purpose, we can take M=60 kg, R=5 meters and V=10 meters...

Homework Statement Thought it'd be easier to post the problem statement rather than writing it down again.http://imgur.com/TE2kN.png" The Attempt at a Solution I'm trying to get b and c. For b I have: \frac{mgd}{\Delta t_{one flap}}=\frac{\frac{1}{2}m(v_f ^2 -v_i ^2)}{\Delta t}...

Homework Statement The hot reservoir of a heat engine is steam at 100^ C while the cold reservoir is ice at 0 C. In 1.3 hr of operation, 11 kg of steam condenses and 52 kg of ice melts. Homework Equations I think power output is W=Qin-Qout The Attempt at a Solution I believe the...

Homework Statement Hi. Just like the title says, why is the output impedance of an op-amp so small? (as in physically, I understand why a low output impedance is a desirable characteristic)

how to see the output of a file operation? eg void main() { int a; cin>>a; ofstream o("a.txt"); o<<a; o.close(); } does the text file "a" come into existence? can we open it?

This is not really homework, it's just something I don't understand and I will be assessed on it soon, so I need some help on it. First off our teacher is the worst teacher you will ever encounter, he gives us the solution but doesn't tell us how (tells us to figure it out ourselves). I tried...

Homework Statement Trying to create an excel spreadsheet that outputs the angles of a simple pendulum as it slowly comes to a stop. Homework Equations so I've used the formula: θ(t) = θ0cos(squareroot(g/R*t) where: θ0= inital angle g=gravity constant R= length of string t=time...

Homework Statement If an alternating input sinusoidal voltage is applied to the circuit shown, and if the Zener V(z) is about half of V(in), sketch what V(out) will look like. Explain briefly the operation in one half the output cycle. (Assume no load across V(out) terminals)...

While I know there exists: In[1]:= Timing[Integrate[blah]] Out[1]:= {result,time it took to calculate} Is there a way to just have the time it took to process a step appear in the Out[1]:= part, or after every step rather than having to use the Timing function and then pull out the...