Recent content by jamesbrewer

Unfortunately I have no idea. All I was told was "Incorrect answer."

Here's what I've got: |\vec{C}|^2 = |\vec{A}|^2 + |\vec{B}|^2 - 2|\vec{A}||\vec{B}|cos\theta 6.73^2 = 5.25^2 + 5.25^2 - 2(5.25)^2 cos \theta 45.29 = 27.56 + 27.56 - 2(27.56) cos \theta 45.29 = 55.12 - 55.12 cos \theta 45.29 - 55.12 = - 55.12 cos \theta -9.83 = -55.12 cos \theta...

How can I form a triangle if I don't know anything other than the vector's magnitude? I have nothing to tell me what direction it points in.

What are a, b, and c? The lengths of the sides of the triangle? If so, would that mean that a = |A|, b = |B|, and c = |C| (the resultant)?

Homework Statement Two vectors A and B have the same magnitude of 5.25. If the sum of these two vectors gives a third vector equal to 6.73j, determine the angle between A and B. Homework Equations For some vector \vec{R}: |\vec{R}| = \sqrt{R_x^2 + R_y^2} The Attempt at a Solution...

A vector being parallel to an axis can tell you something about it's direction. In this case, the vector is parallel to the -x axis. Is the fact that it's parallel to the negative x-axis (as opposed to the positive x axis) important here? If so then that means that \theta_{A-B} = 180 deg...

A vector being parallel to an axis can tell you something about it's direction. In this case, the vector is parallel to the -x axis. Is the fact that it's parallel to the negative x-axis (as opposed to the positive x axis) important here? If so then that means that \theta_{A-B} = 180 deg. When...

Homework Statement The diagram below shows two vectors, A and B, and their angles relative to the coordinate axes as indicated. http://loncapa.physics.mun.ca/res/mun/PHYSICS/msuphysicslib/Graphics/Gtype07/prob01a_vectors2.gif DATA: α=43.7°; β=53.4°; |A|=4.30 cm. The vector A−B is...

I was doing a problem set earlier today, using WolframAlpha to check my work when I realized that WolframAlpha is a pretty cool site and definitely something I'd be interested in working on. The company seems to have internships, although the link just sends you to the regular jobs page. What...

I'm taking a calculus-based introduction to physics this semester and I'm finding it fascinating so far. The idea that there is a reason and a method for everything really resonates with me and that has lead to me really enjoying this course. I'm also really into programming. I've spent quite...

This is cool advice and I can see where you're coming from. I just relate Chemistry to the feeling of being raped -- I had a bad experience with a Chemistry course last year. I suppose I could give it another shot at some point, but I would have to self-teach it. I find that professors sometimes...

I'm stuck in a similar situation. I'm interested in physics, computer science, and applied math, but I have no idea which I want to major in. I'm going to spend this year deciding which I enjoy more and I'll probably go with that one. I'm also considering double majors in Applied Math/Physics...

A word of caution: this is NOT always the case. I did this for my Calculus I final last year and the difference between this exam and previous ones was astounding. That said, I do agree this is generally a good thing to do, just don't put all of your eggs in one basket. I recommend you check...