Recent content by Canadian

Homework Statement Show the complete mechanism for the electrophilic addition reaction of toluene and bromine, isopropylbenzene and bromine. Draw the structure of the intermediate hydrocarbon. Homework Equations None The Attempt at a Solution I am having a really hard time with...

Thanks for the help, the two eigenvalue questions were accepted after putting the answer in decimal form. I'm headed off to bed now, will try the rest tomorrow morning.

[SOLVED] Complex Numbers: Eigenvalues and Roots Below are some problems I am having trouble with, the computer is telling me my answers are wrong. It may be the way I am inputting the numbers but as my final is in a week and a half I would like to be sure. Thanks,

Great thanks!

Alien question is solved, thank you for your help. I still am not getting this question, I think I am making it more complicated than it needs to be. Would you be able to give me an example of how this works (using one from the question or another)? Thanks, I am really not sure myself, I was...

[SOLVED] Linear Algebra Question, tilting plane angle? Homework Statement A million years ago, an alien species built a vertical tower on a horizontal plane. When they returned they discovered that the ground had tilted so that measurements of 3 points on the ground gave coordinates of (0, 0...

Homework Statement The Attempt at a Solution First I found eigenvalues/vectors. Eigenvalues = 0, 3. Associated eigenvectors are (1,2) and (1,1). P= matrix of e. vectors, D = matrix of values. Not really sure where I'm going wrong, have gone through it a few times, but my...

Thanks everyone, I was on the right track, but reading it wrong like I thought I may have been. They were asking for 145/200 not 72.5%.

No I don't think so, on this system if you enter the answer 1/3 as 0.333333333333333333 it will still mark it as correct.

This problem is frustrating me, I am a university student taking a course in introductory linear algebra. This problem is on the list of problems we were supposed to do to get used to the computer system, the problems were supposed to be an easy review. The other 9 problems were very simple but...

Homework Statement A 61.0 cm diameter cyclotron uses a 500 V oscillating potential difference between the dees. The magnetic field strength is 0.790 ? How many revolutions would a proton make before leaving the cyclotron? Homework Equations v/r=Bq/m Ke=1/2mv^2 The Attempt at a...

Homework Statement In a circuit a 20-ohm resistor sits inside 104 g of pure water that is surrounded by insulating Styrofoam, there are additional resistors in the circuit. If the water is initially at temperature 10.5 degrees celcius, how long will it take for its temperature to rise to...

Bump . . Should I be dividing by 4 somewhere since there are 4 charges??

Ok thanks, I think I see where I was going wrong I only need to consider the forces acting on one sphere alone since the rest will be identical in their speed. Is this better? The computer program still doesn't like the answer I got.

Homework Statement Four 1.0 g spheres are released simultaneously and allowed to move away from each other. What is the speed of each sphere when they are very far apart? The Attempt at a Solution Here's what I got initial potential energy is equal to final kinetic energy. 0.9866...