Recent content by genu

Homework Statement I'm trying to understand an example in the book. They're simplifying the following expression: S=z \oplus (x \oplus y) =z'(xy'+x'y)+z(xy'+x'y)' I don't get how they go to this from the above =z'(xy'+x'y)+z(xy+x'y') =xy'z'+x'yz'+xyz+x'y'z Homework Equations DeMorgan law...

great..thx. That solved it >)

thanks, well it seems that it doesn't find items that are in the last node. How can I make it search the last node as well in this loop? or do I have to compare the input to the last node separately? public boolean search (String lastNameSearch) { LinkedListNode<T> current...

public boolean search (String lastNameSearch) { LinkedListNode<T> current; current = first; boolean found = false; ExtPerson person = (ExtPerson) first.info; while (current.link != null) { if ((person.lastName.toLowerCase().equals(lastNameSearch.toLowerCase()))) {...

Homework Statement It should be obvious that the simple interference of two waves is not the only that you have seen with the double slit. What other phenomenon is altering your pattern? Homework Equations The Attempt at a Solution I'm assuming that the intensity of the light of...

oh...I see, thank for pointing that out. As far as the signs go, do the answers have different signs? Although, they don't specify as to whether the charges are positive or negative.

q1 = 4.0 μC = 4.0 * 10^-9 C q2 = 6.0 μC = 6.0 * 10^-9 C here is what I did F = (8.99 * 10^9 * 4.0 * 10^-9 C * 6.0 * 10^-9 C)/3.0^2 = 23.973N Now that I think about it, the difference between the 2 questions should be the direction of the force, but the same magnitude.

Homework Statement A charge q1 = 4.0 μC is at the origin and a charge q2 = 6.0 μC is on the x-axis at x = 3.0 m. Find the magnitude of the force exerted on q1. Give your answer in N rounded to 3 decimal places. Find the magnitude of the force exerted on q2. Give your answer in N rounded to 3...

Homework Statement determine whether the integral converges or diverges: \int_0^1\!\sqrt{\frac{(1+x)}{(1-x)}}dx Homework Equations I know what if the value is a finite number, it converges, otherwise it diverges. Teacher was was able to determine the fact just by looking at it... what...

Thanks, that really helped... When do that u substitution, however, do I need to rewrite my limits? because once I integrate, I will be witting everything in terms of t... so which limits do I use in the end? the originals? or the ones from the u substitution?

Homework Statement Use an appropriate substitution and then a trigonometric substitution to evaluate the integral: \int_-^{ln(4)} \frac{e^{t}dt}{\sqrt{e^{2t}+9}} Homework Equations Seems to be close to the t=atan(\theta) model \int \frac{e^{t}}{\sqrt{a^{2}+x^{2}}}dt The Attempt at a...

rotating around the x-axis how can I tell its a parabola?

Homework Statement Use the shell method to find the volumes of the solid generated by revolving the regions bounded by the curves and lines. x=2y-y2, x=0 Homework Equations The shell method is of the format: V = 2 \pi\int x * height dx The Attempt at a Solution I cannot...

Homework Statement Derive the equations for v0 and R, and show how you made your prediction. Homework Equations d = v0t +1/2at^2 The Attempt at a Solution The acceleration was zero, so I rewrote the equation: R(range) = v0t but then they substituted t with\sqrt{\frac{2Y}{g}}...

Attached how I've setup the experiment for the horizontal. (I determined mu s by adding masses to m2 until the m1 started moving with constant speed) -- at least I tried to maintain a constant speed. Attached is also the data for Experiment 1 and 2. (i'm comparing only the wood from experiment...