Thanks Definition and 214 Threads

some hints on the question... please?! thanks! 1. Assume that the region to the right of a certain vertical plane contains a vertical magnetic field of magnitude 1.00 mT, and the field is zero in the region to the left of the plane. An electron, originally traveling perpendicular to the...

hi just wondering how you would solve this problem A 3 kg toy car with a speed of 6 m/s collides head on with a 2kg car traveling in the opposite direction with a speed of 4 m/s. If the cars are locked together after the collision with a speed of 2 m/s, how much kinetic energy is lost?

"We thank J. Distler and R. Percacci for animated discussions which triggered this investigation. Furthermore, we are grateful to J.P. Blaizot, A. Codello, R. Loll, E. Manrique, and M. Reuter for useful conversations..." It's interesting to contemplate the different ways that progress in...

In my algebra/triganometry-based physics class (on electricity and magnetism) and yesterday our professor went over how to convert and AC generator into a DC generator; it got kind of confusing so i tried to read it over in our book but there's only like 3 senteceson it... could anyone help...

(Tanx)^2(Secx)

Homework Statement Monochromatic light of wavelength 656 nm is normally incident on a vertical plate with two slits at positions +-d/2 where d=.25mm, the resultant interference pattern is observed on a screen at distance D= 3.4m away, let y denote vertical position on the screen with y=0 at the...

[FONT="Arial"][SIZE="4"]Homework Statement The Questions are 2x - 3 > x + 15 -4 x = 2 < 10 ( I am not sure how to place a line under the < on my computer) and -5x + 1 < -2x + 10 I have never done these type questions before and if anyone is really good at explaining the answers, I would...

I figured out the problem myself. Thanks anyways

Homework Statement three dimensional coordinate systems. vectors. a) let W br yhe solid region consisting of all the point p(x,y,z) satisfying the following 4 conditions:i) the distance from P to the point (4,2,6) is at lewast twice the distance forom P to the point (1,2,3) ii x>or = 0...

A marble is thrown horizontally with a speed of 23.4 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 61.8 ° with the horizontal. From what height above the ground was the marble thrown? So far I have found Ay= -9.8, Ax= 0, Vox=23.4...

Does the ball clear the net?? Please help, thanks in advance? A tennis player hits a ball 2.0m above the ground. The ball leaves his racquet with a speed of 22.0m/s at an angle 4.5 degrees above the horizontal. The horizontal distance to the net is 7.0 m, and the net is 1.0 high. i know that...

I work for a glass replacement company where we replace broken glass in highrise buildings. My question is this, I have a piece of glass that we call a rake, but is really just in the shape of a right angle. The measurement from inside the building, called the daylite measurement, is 37 1/8"...

auxins experiment Thanks :) What would you expect to happen when you removed the meristem from 10 coleptiles, then placed five in water and the other five in auxin concentration of (2mg/ml)? What would you notice about the number of cells for each section?

A hydrated substance was found to have the following percentages composition: Na = 16.1% C = 4.2% O = 16.8% H2O = 62.9% What is the empirical formula of this compound? ------------ im really confused and don't know where to start so if someone could help itd be very much...

Finally, my picture frame for my diploma came in. I bought it for my parents so they can hang it on the wall of our study. This would not have been possible if it were not for their help (They paid for my education). But, I also have to thank everyone here for helping me with my questions over...

[SOLVED] electrostatics, ONE TEENSY little problemo! please HELPPPPP thanks! Homework Statement Two charges of q1 = 1.3 µC and q2 = -2.6 µC are d = 0.60 m apart at two vertices of an equilateral triangle as in Figure P16.56. (d) What is the work required to move a 3.2 µC charge...

1. Use the sandwich theorem to compute the limit as n goes to infinity of the sequence with the following nth elements: a(n) = [1 + sin(n*pi/3)cos(n*pi/5) ] / [n^0.5] I would really appreciate some help with this one guys. If you could please go slow with the answer as my trig is pretty...

Homework Statement Prove that there exists a positive integer k such that k 2^n+1 is composite for every positive integer n. (Hint: Consider the congruence class of n modulo 24 and apply the Chinese Remainder Theorem).Homework EquationsThe Attempt at a Solution Notice that...

[SOLVED] Waves ~~~~~ HELP one Simple problem! Thanks! 1. Homework Statement .

Hi everybody, The area of a tennis racquet head size is like an egg shape, not oval shape. how to calculate it? Thank you so much for your help ^_^

Please Help Soon!thanks A river follows the path y = f(z) where x, y are in kilometers. Near the sea, it widens into a lagoon, then narrows again at its mouth. At the point (x, y), the depth of the lagoon is given by D(x, y) = 40−160(y−f(x))2 − 40x2 meters. The lagoon itself is described by...

Below is a question I was assigned from my mentor for research. Please help me in how to approach the answer (w/o numbers), and write the step-by-step procedure on how to generate the appropriate equation. Thank you for your support. Homework Statement A train starts out from New York...

I am having a very tough time trying to figure this one out. Any help would be appreciated. A river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore by maintaining a consistent velocity of 10.0 m/s due north relative to the water. A) What is the...

three charges in a line (need help fast --please? (thanks)) Homework Statement Two charges Qc and -Qc(Qc = 6 µC) are fixed on the x-axis at x = -8 cm andx = 8 cm, respectively. A third charge Qb = 2 µC is fixed at the origin. (attached .gif file shows the diagram) A particle with charge q...

Circuit Nodal voltage question...please help out thanks! Homework Statement The question is as follows: Start with KCL for the nodes and write the node voltage equations for the nodes V1 and v2 in the circuit (diagram is attached to this post). They do not want me to solve the equations...

Homework Statement I have attached the circuit diagram to this post. I have to find i which I have shown in the diagram. All the voltage and resistor values are also given. Homework Equations The Attempt at a Solution I tried finding the current for the whole circuit which would...

Homework Statement In a science museum, a 110 kg brass pendulum bob swings at the end of a 15.0-m-long wire. The pendulum is started at exactly 8:00 a.m. every morning by pulling it 1.5 m to the side and releasing it. Because of its compact shape and smooth surface, the pendulum's damping...

here is my question, *thanks for helping* i need it badly Consider the curve y = f(x) where f(x) = (x-5)(2X+3) A) Show that P1 = (x1,y1) = (0,-15) is on the curve and find and expression for the slope of the secant joining P1 with any other point P2 = (x2,f(x2)) , x2 cannot be 0 on the...

A student runs toward the closed end of a hall while holding a vibrating tuning fork. The tuning fork is vibrating at 512Hz. The sound is reflected from the end of the hall back to the running student where 8.0 beats per second can be heard. Determind the speed of the student. i used the...

help! thanks in advance! Homework Statement what do you know about this function:f(x)=x+1/x Homework Equations The Attempt at a Solution

Homework Statement a) 1H + 2H 3He + gamma The rest mass of the proton is 1.0073 u (unified atomic mass unit, 1.66 10-27 kg), the rest mass of the deuteron is 2.0136 u, the rest mass of the helium-3 nucleus is 3.0155 u, and the gamma ray is a high-energy photon, whose mass is zero. The strong...

Hello everyone! Just letting you know I got the co-op for the summer and fall with IBM! They are moving me down mid May to NC to work with the zSeries team! Very excited. -Cory :biggrin:

Homework Statement I need one more question answered =D thanks A man is standing on a spinning turntable with a weight in each hand. His moment of inertia with arms outstretched is 16Nm. WIth his arms by his sdie his moment of Inertia is 6.4Nm. With arms outstreched he makes one rotation in...

Hi, I am having a bit of trouble solving for an unknown current. Can anyone help me out, thanks. The resistor R in Fig18.56 dissipates 11 W of power. Determine 2 possible values of R (V= 76 V). My attempt so far, 1st loop: 35I-35I[SIZE="1"]1=76 2nd loop...

A little late, but I need to thank those who taught me so much during 2006: I must send my thanks to whoever sent me the e-mail about rat poop in the glue on envelopes because I now have to use a wet towel with every envelope that needs sealing. Also, now I have to scrub the top of every can...

thank you for giving me the answer :)

I need to write an essay by the end of this month and it can be on anything to do with environmental physics, which i don't know too much about. any ideas would be appriciated, thanks. ps, i don't really want to write about global warming because most people wil be doing that, i want...

Got It, Thanks Guys

Please someone check to see if on the right track: A woman lifts a barbell 2.0m in 5.0s, beginning and ending at rest. If she lifts the same distance in 10s, the work done by her is: I said it would be four times as much because I used 1/2mv^2. I placed the v I calculated from v=d/t into...

I write short stories every once in a while and I ran into the affect/effect problem. I don't know which one to use, but the notebook I'm using to write in has some grammar rules on the back cover. Here is what it says: to "affect" is to influence, to "effect" is to cause :confused:

Hello everyone I got the answer, but I'm confused on how he wrote out the vectors, like I'm confused on what variables ur allowed to let be any number, and what variables ur actually representing in the vectors. Here is the problem and solution...

I would like to thank all PF members, especially those who replied in my earlier thread of "I need serious help...". I have decided to pursue my dream one step at a time. I have just applied to the University of Waterloo for Pure Mathematics. Technically, I will be a General Mathematics...

An Advertising sign is supported by a horizontal steel brace extending at right angles from the side of a building, and by a wire attached to the building above the brace at an angel of 25. If the force of gravity on the sign is 850N, find the Tension in the wire and the compression in the steel...

Find the numbers M and N such that: 5+4x -x^2 = m - (x - n)^2 for all real values of x. If someone could work this out, Then ill show my workings and ask questions (its to do with the arrangements of N^2 after expanding brackets mainly. Thanks in advanced, ASMATHSHELPME

Thanks SOOOOO much for the help everyone, I am done independent learning SUCCESSFULLY-thanks to your guys help. Your awesome! :smile:

hwk helpp please helpp! thanks in advance "Prove each of the following using Mathematical induction;" show all steps pleasee someone help.. i have a test on this tommorow and i just need some examples.. could you also try to show all steps including the words so i understand how you got there...

I was doing my homework but i am really stuck. My teacher ain't that good he doesn't explain things very good. If you can help please help. Thanks 1. a cyclist of mass 60kg riding up a hill which is inclined at 30 degress to the horizontal at a constant speed. the mass of the bicycle is...

I got a airbrush for my birthday. I've never even held one before so I probably should have read the instructions. I don't have a compressor so I got a can of Propel, which appears to be full of butane. Anyway, I hooked the hose up to the can first, instead of to the airbrush first. As soon as I...

Hello, all, I have got this question which is about friction. If we pull a cloth, that is covered on a table, with the speed v=3m/s. A cup on the cloth and not far from the edge of the table would not fall off. So, what is the reason for us to give this speed to the cloth? My opinion...

:biggrin: Thanks 42, the feeling is http://www.baker-street.net/tiger/ . :smile::-p