# Search results

1. ### Confusion about squeeze theorem example; plugging 0 into x when x ≠ 0.

This is from a textbook but it is not a homework problem, it's an example following the introduction of the "Sandwich Theorem". It says "for all x ≠ 0", but then it appears to assume that x = 0 when it finds the limits of g(x) and h(x). Clearly 1 ≤ u(x) ≤ 1 means u(x) = 1, I don't dispute...
2. ### Calculator operations and value of i.

Like many math newbies, complex numbers (or at least the idea of complex numbers) are a source of some confusion... but I've worked with them before and I'm reading through posts on PF that I hope will give me some sense of intuition about them. That said, there is one nagging question that I've...
3. ### ISU vs UIdaho; Comparing Undergrad Physics Programs

At the moment I'm attending North Idaho College, and while ideally I'd be able to transfer out of state to a better University, I'm all but guaranteed a spot at either University of Idaho (UI) or Idaho State University (ISU) if that doesn't work out. So naturally I'm trying to figure out which...
4. ### Chemistry - Concentration from known pH and Ka.

Homework Statement A particular sample of vinegar has a pH of 2.90. If acetic acid is the only acid that vinegar contains (Ka = 1.8 x 10-5), calculate the concentration of acetic acid in the vinegar. Homework Equations Ka = [Products]/[Reactants] pH = -log[H+] The Attempt at a...
5. ### Subjects in addition to Physics requirements; scheduling.

(If there is confusion about course content, see links at bottom of post for course descriptions.) So looking ahead to the next 3 semesters, I can plainly see what classes I NEED to take for Physics.. but they leave room for courses in other disciplines -- for example Engineering, Computer...
6. ### Visual Studio deleting .exe files in \Debug\ folder.

(Programming and VS newb here.) I'm hoping someone has had (and fixed!) this problem. I'm working on a project for my CS-150 class but I'm having some tech troubles. I'm running Visual Studio 2010 Ultimate (downloaded via MSDNAA) and it (or something else) seems to be deleting my project.exe...
7. ### Looking for dimensional analysis problems/solutions!

I wasn't sure whether to put this here or in the Chemistry forum, so if it's in the wrong place I'd prefer it be moved rather than deleted. ;) Anyway. I'm struggling a bit with Dimensional Analysis, particularly of volumes/density and recognizing conversion factors when I see them. As more...