Recent content by Ellipses

How would I go about calculating that phase difference? Should I use the general wave equation?

Homework Statement Consider the double-slit arrangement shown in the figure below, where the separation d is 0.280mm and the distance L is 1.16m. A sheet of transparent plastic (n = 1.50) 0.0513mm thick (about the thickness of a piece of paper) is placed over the upper slit. As a result, the...

Thanks for the answer! I know indefinite integrals but not definite so could you please explain how you solve your example? (:

Hi everyone. I don't want someone to do the question so I won't include my actual homework question, but I would really appreciate if someone would tell me how to find velocity after a time t if your acceleration is non-constant and time dependent. For example, if your acceleration was a =...

Homework Statement 1. Simplify: [sin(x-pi) / cos(pi - x)] - [tan(x-3pi/2) / -tan(pi + x) 2. Solve: 1 - tan(2x + pi/2) = 0, 0 ≤ x ≤ 2pi Homework Equations cos(x - y) = cosxcosy + sinxsiny sin(x - y) = sinxcosy + cosxsiny tan(x + y) = tanx + tany / 1-tanxtany tan (x - y)...

I think I get it now. Thank you all very much!

So basically, the direction of tension is both directions along the plane? So if I were to write out an answer to the question in that example, do I say it is plus/minus 162N? Or just 162N?

Thank you all for the informative answers. I think I understand it just a little better now. Would it be fair to say that tension can be considered the sum of the magnitude of the forces? Since in that example, gravity is -147N (let downward be negative) and net force is +15N, the total...

147.1 Newtons [up], then...? So would that make the tension 0? But that doesn't make any sense... I'm confused. D:

Thanks for the answer! But what if it were accelerating (for example, let's say 1.0m/s^2 [up])? Also, I'm still not sure what tension in the rope actually MEANS, or what it IS.

This has always confused me, and I'd appreciate any help in clearing this up. Let's say you have 2 masses hanging from a rope, one below the other, like the attached diagram. What is the tension in T2? How would you go about finding it? I am under the impression it's the vector sum of the...

I have to use vector components. My teacher said no trig/sine law/anything. D:

Thank you for the picture, but every time I look at it (or my own diagrams), I still can only think of using trig to solve it. I just can't see how you can use components for this. :/

Homework Statement Amy wants to reach a destination that is 330m [E31 degrees N] from where she is. She travels a distance b towards [E20 degrees N] and then 100m to her destination. What is the distance b? (list all possible answers) (Sorry I don't know how to get symbols) Let [N] and [E] be...

Hello everyone. I understand the concept of work in general, but the concept of negative work still somewhat baffles me. One of my main problems is this: according to my textbook, 3 conditions must be met in order for work to be done, and one of them is "at least part of the force must be in...