Figure Definition and 608 Threads

Equation Needed to Figure Resulting Kinetic Energy and Velocities from Fusion... Homework Statement Hey, I am have the initial velocities and masses of nuclei involved in fusion, and am trying to figure out the resulting velocities and kinetic energies. Since this is an inelastic reaction...

Homework Statement \lim_{x\rightarrow\infty} \sqrt{e^{2x}+9}-e^x Homework Equations \lim_{x\rightarrow\infty} \sqrt{x} = \infty \lim_{x\rightarrow\infty} e^x = \infty The Attempt at a Solution \lim_{x\rightarrow\infty} \sqrt{e^{2x}+9}-e^x = \lim_{x\rightarrow\infty}...

I don’t know much about physics, but I was recently in an accident and I am trying to figure out approx how fast the other driver was going. What details would I need for the formula? I do know the object weighs 40,000 lbs (speed limit in area was 35, so I know it was going anywhere from...

Hi i was just wondering if someone could tell me how one can find the phase shift and the number of squares to move the graph over by from an equation?. We are doing cosine and sine graphs and my teacher has been away for a few days so the supply teachers haven't been really that great in...

I am looking all over to try and find out how to figure out the tension that would be on each of the poles used for a zip line I am trying to build in my back yard. I would like to build it so that it can support a 300lbs person. I am not very good with math so if someone would be willing to...

Took physics in 11th grade.. ssoooo many years ago. I remember my teacher showed us this one educational show about this one phenominon or something.. was trying to figure out what it was called.. the 2 examples that i remember in the movie were -If you lined everyone up against a wall...

hey I'm stumped with a question that deals with finding unknown node voltages as I only know how to complete part of the problem. here is the circuit, sorry for the crude MSPaint I do not have a working scanner here. http://img7.imageshack.us/img7/8730/circuiti.png the answers are v1...

Trying to figure out the gravitational attraction between two objects using Newton's Law of Universal Gravity.Need to figure out what the force is.Here is a model.If anything is in ordinary parentheses then it is an exponent. ----------------------G --------____________|_____________400x300...

Hey folks, I need to save a figure from my MATLAB GUI, which is just a simple plots. Because this plot is the child of a uipanel, so I just use "copyobj" command to copy the handle of the uipanel to the new figure. However, although everything is copied, the legend is not really showing up...

I can't figure out this problem! Homework Statement The two wire loops shown below carry current as indicated. Draw 4 arrows representing the magnetic field due to the bottom loop at the top loop. Draw 4 arrows representing the forces on the top current loop due to the magnetic field in...

Hello I'm new here and I don't know if this is the right place but I just got my "electrical engineering" book in the mail and I started to flip through it. It look really interesting and all so I decided to read some of the examples it had I figured most of them out but got to this question and...

Homework Statement it's stated that 2.5meters separated a trough and an adjacent crest of surfae wave on a lke. Homework Equations The Attempt at a Solution At first I thought if the trough to th crest is 2.5meters then i would double that to get the wavelenght from crest to...

very cool. i wonder if there's a catch: http://www.telegraph.co.uk/earth/earthnews/4375077/Scientists-invent-2-energy-saving-lightbulb-that-last-for-60-years.html

Hello... new to the forum and not sure where to post, I see a warning everywhere lol Hope I'm not in the wrong spot. I haven't been in school in well over a decade, but I'm the kind of guy that went out and got math books on my own because I was jonsing to do some math... it's fun for me...

I have a vehicle with some known info... weight: 3400lbs Speed at a specific time: see data in chart linked below overall gear ratio: 2.922 Tire size: 25.68 inch Radius RPM at speed: see data in chart linked below heres the data http://spreadsheets.google.com/ccc?key=pxiQyAOYb5vb6jOOMdoQuOg"...

Homework Statement integral of x*e^x from 0 to infinity Homework Equations N/a The Attempt at a Solution i first integrated the integrand and got (xe^x - e^x) then i use limit as R approaches infinity and used 0 and R as my limits. when calculating i keep getting 1 instead of...

Hello, I just couldn't understand how solver comes up with the equation at line 5 of the part b. (equates t (time) to other variables). I think the first 4 lines are enough to figure out this equation so i am not posting the question. i will be grateful if you'd help...

Hi all, How could I get a small figure and a set of equations to appear side by side? Thanks

1.) How is the instantaneous speed obtained from a speed-time graph? 2.) I ADDED A PICTURE OF A TIME GRAPH USED FOR THESE QUESTIONS: http://i36.tinypic.com/wkh8gx.jpg (the left numbers are distance, the bottom numbers are time (min) A. which graph illustrates a constant speed for the...

Velocity question...i can't figure it out :( A person throws a baseball straight up from the ground. The baseball leaves the persons hand with an initial velocity of 10.0 m/s [up]. The acceleration of the ball is 9.81 m/s 2 [down]. Assume up as the positive direction. a. what is the velocity...

I'm still trying to pick the proper field within engineering. I'm an older student (26) with close to 10 years experience supervising/operating a shift at a wastewater treatment plant. I've also held the lab technician position for a number of years as well. My interests are in designing...

I read the rules of the site and read the stickies, I hope this is in the right section. I need help figuring out this algorithm, putting a number in generates the corresponding numbers. Sorry if the post is long, I tried to get as much information as possible. I can enter any number that...

I just don't understand why it goes like this...why 'therefore'? i know (x^2)f''(x)+xf'(x)+((x^2)-1)f(x)) = x(xf''(x)+f'(x)+xf(x)) - f(x), but why it goes to zero when taking (d^n/dx^n)?

why the equivalence? there must be some formula for this...just i donno. i really need some hints! thank you guys!

HELP! Please! I only have 1 more day to figure this out! If there is ANYONE out there who is a kind enough person to help me with this (and knows how to do it!) I would be VERY grateful! I only have one more day to work on these problems! Thank you so much!:confused: For the following...

I cannot figure out what is wrong! (frustrated) Homework Statement An electron in a cathode-ray-tube (CRT) accelerates from 4.00 x 10^4 m/s to 6.00 x 10^6 m/s over 2.50 cmHomework Equations How long does the electron take to travel this 2.50 cm?The Attempt at a Solution (4.00 x 10^4 + 6.00 x...

Since the present idea is that the known Universe (include dark matter) was once condensed into a tiny singularity; and since this 'exploded' into what we now see, how can we measure time of events? Or describe how 'large' the Universe was at any point in time? In other words, I'll read...

Mathematical Derivation of Significant Figure "Rules" Let's say I have a scale which can accurately read weights out to ten-thousandths of a gram so it might read 1.0005 g or 0.0005 grams ... why is it that the first reading has 5 significant figures and the second has only 1? Same instrument...

Homework Statement Suppose that you are given the following PetDriver class, which includes a main method: public class PetDriver{ public static void main(String[] args){ int weight = 40; Pet doggie = new Pet("Rover", weight); System.out.println("my pet's name is "...

Okay I have been doing unit analysis homework and it is generally easy however a few questions I use the same logic but cannot come up with the correct answer. Keep in mind the homework is turned in electronically so the answer must be exact but without the aid of expressions or ratios etc to...

Hi all, I am trying to solve numerically as well as model the electric field lines coming out of a electrode (not a point charge) in a dielectric medium. ANy suggestions would be greatly beneficial _________________________________________________ _ separated by d + separated by d _...

Hi! How do I make a line from a point to another point in Mathmatica, a 3D image? Also, if you got any tips on how to do this: I have a 3D pyramid and a plane("a window"). Behind the plane there is a point "An eye looking at the pyramid". I need a line from every corner of the pyramid...

Who can figure this one out? The topic of discussion amongst my friends and I: What is the probability of the sum of a football game landing on odd versus even. My friends say that it is a simple 50/50 coin toss. My rebuttal is that while in football the only integers that can be...

I am building an "alternative fuel" motorcycle. But i am having trouble figuring out what size motor i need to use and how much torque it needs to put out. I have already figured out my top speed, (I am limiting the prototype) and also the RPMs of the drive tire at that speed. I also...

Homework Statement Question 1. Find the sum of the measurements 896 g, 55.2 g, 0.63 g, and 3.5 g. Question 2. How many significant figures are in the measurement 60,000,000 km/s?Homework Equations The Attempt at a Solution Attempt on #1: 955.33 g (wrong ans) Attempt on #2: 2 sigfigs (wrong...

Homework Statement ∫ 1/cos theta before it was ∫ sec theta but i know that sec theta is equal to 1/cos theta would i write it as 1/2 ∫ cos theta and then 1/2 sin theta

Homework Statement (1-u^2)/(sqrt u)

Hi all. i am integrating in MATLAB and plotting the results in a y-verically and t-horizontally. Matlab automatically plots y versus the time step which is great. but what i need to do is re-label the t-axis so the actual time appears instead of the time step- so instead of from 0 to 1200, it...

I've been trying out this problem for hours and can't figure it out. A helicopter is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 52100 N. The lift force vector L generated by the rotating blade makes an angle of 21.0° with respect to the...

Hi, I am struggling with a problem and do not know how I should approach it. I went to a baseball game with my son, where I bought him a packet of M&Ms. While eating the candy, my son asked me what color most of the M&Ms are. At first, I intended to tell him that there are equal numbers...

Homework Statement find the magnetic field at point P in the figure below: (see attachment) Homework Equations magnetic filed B = integral[dB] = mu_0/4pi (integral[I(dL)/r^2]) where mu_0 is constant = 4pi*10^-7, I is current, dL is change in length, r is radius The Attempt at a Solution...

Homework Statement Friend's fiancee gave this problem on a final she was administering and isn't sure how the answer key is right: Boyle's law describes the inverse variation between the volume of a gas and the pressure, y, exerted on it. A balloon with a volume of 2.25 liters is sealed in...

Homework Statement A 4000lb uniformly weighted crate is attached by light inextensible cables to the trus show below. Simply determine the reaction at A and E of the truss show below Figure 1 attachment Homework Equations I used the Moment arm equation of M = F*Distance The Attempt...

A wedge with an inclination of angle theta rests next to a wall. A block of mass m is sliding down the plane, as shown. There is no friction between the wedge and the block or between the wedge and the horizontal surface. 1) Find the magnitude, F_net, of the sum of all forces acting on the...

Homework Statement For a two DIMENSIONAL figure of given perimeter why does the circle have the largest area? Similarly, of all three dimensional figures of given volume the sphere has the largest area. why? Homework Equations The Attempt at a Solution

[SOLVED] Quick Question...I have the answer with steps, but can't figure out how th Homework Statement Two charges of 1.5x10^6C and 3x10^-6C are .20m apart. Where is the electric field between them equal to zero?Homework Equations The Attempt at a Solution Variables r(total)= .2m q1=...

I have a system that has several different sections which different coefficients of friction. Most rolling. The mechanics go in this order: motor, gearbox, pulleys & wire rope, and rollers that align a vertical door in a track. So I'm going to say my lubricated metal gearbox is ~0.01. My...

Figure 2-4 in "Spacetime Physics" by Taylor & Wheeler The figure illustrates the effects of free float on the perceived trajectory of a ball thrown in a room that is on a ledge and then in a room that is sawed free from the ledge. In both cases, the ball is launched at the same speed and...

2-Animated graphs on one figure HELP! I want to plot 2 animated graphs on the same figure (y=sin(x) and y=cos(x)). I wrote this code x=linspace(0,10,10000); y1=sin(x); y2=cos(x); comet(x,y1); hold on comet hold off I want that the "comet head" of those two function start at the...

Homework Statement This figure is driving me insane. How can the energy gradient point inwards! For the hole orbit. The shading represents filled orbits (I am pretty sure), so how can you possibly have orbits filled everywhere except the center of the First Brillioun zone. That is outrageous...