Recent content by negatifzeo

Thanks a lot guys. Great explanations here, I really appreciate it.

I am hoping for a detailed elaboration of the 'energy state' concept as it applies here. It says here that water exists at a lower energy state than separate H and O atoms. I understand that concept - but how does this process take place? What prevents H and O from spontaneously forming water...

http://answers.yahoo.com/question/index?qid=20080206132159AANTyX0I would like some more detail about the following, from the above link: "Hydrogen molecules and Oxygen molecules have a much lower energy state when combined to make the molecule H2O (water) than the total energy when they are...

Hydrogen, in the presence of oxygen, will combust when exposed to a heat source and form water. At least this is what I have gathered from some googling. But I haven't been given a satisfactory, detailed explanation as to why this occurs. Would anyone here be willing to describe this process to...

This was a quiz question recently in my microbiology class: In what way are transcription and DNA replication compartmentalized in eukaryotes? a. they occur in the same compartment b. they occur in separate compartments c. one must be finsished before the others start d. they are...

Thanks. My big problem was not realizing I had to convert the current source into a voltage source by placing the parallel resistor in series.

Homework Statement This isn't a homework assignment, this is straight from the textbook. They work it out but I'm still not following, would it be possible for someone to go through this step by step and explain it clearly? (How to determine the current due to the voltage source and due to...

Thank you so much. Do you think you could post a link to one of these sources? Normally I'm capable when using the google; I don't know why this information has been so difficult for me to find.

Homework Statement The task is to design a MATLAB program reminiscent of the text-based lunar lander games. Ol, that's not that bad. My problem comes from the research, specifically determining what thrust will be provided from what rate of fuel burned. I know that thrust=(dm/dt)v where v is...

Homework Statement I'm getting fairly frustrated seeing as I've been working on this 'easy' problem for several hours yet still can't get the correct solution. The problem is as follows: A 180 lb- man and a 120-lb woman stand side by side at the same end of a 300-lb boat, ready to dive, each...

Actually for this problem the 2kg block is connected to the spring.

Well, I thought I had done it correctly, PhantomJay. In determining the max height, the initial KE is 0, and the final KE should also be 0, right? It is released from rest once the 3kg mass is lifted. Right? The work in this problem should be given by 1/2kx^2, positive work being done until...

We haven't covered PE yet in class, but at any rate I don't understand what you are suggesting. The 2*9.8 is from the work done by gravity. Can you clarify?

Well starting off with max height. We know that the displacement of the spring is initially 1.23m. So assuming that at max height KE=0 and that KE=0 initially, 1/2(40)(1.23^2)-1/2(40)(ymax^2)-(2*9.8)(Ymax+1.23)=0 Solving this for Ymax gets me 1.23m. This obviously isn't true, you would...

Homework Statement A 3-kg block rests on top of a 2-kg block which is connected to a spring of constant 40 N/m. The upper block is suddenly removed. determine a)The maximum speed of the 2-kg block and b)the maximum height of the 2-kg block. Homework EquationsThis is supposed to be done...