Recent content by The_Engineer

The water level in the object is above the water level in the current because the current is supplying enough pressure to push the water that high. The current has a velocity, and you can probably imagine that faster velocity entails a higher water level in the object. There is also a distance...

I need to convert kcal/(mol-Angstrom) to eV/Angstrom. I have force values in eV/Angstrom, which I can easily convert to Newtons. I just can't find any conversion factor anywhere on the web for kcal/(mol-Angstrom) to Newtons or eV/Angstrom! Any advice?

This is what I was trying to ask in my original post. The "balcony" is actually translating and therefore has no angular velocity, correct? This is because every point on the rigid body of the "balcony" has equal velocities. In order to have angular velocity, the "balcony" would have to have...

There seems to be different types of angular velocity to me... 1) A rigid body could be moving in a nonlinear path (ex. a pendulum) 2) A rigid body could be rotating about an axis on itself (ex. the Earth rotating about an axis) 3) Both #1 and #2 combined (ex. the Earth moving around the sun...

I'm trying to compute lateral strain for a bar (strain that would make it thicker, or have more cross sectional area). All I know are the initial and final diameters. This gives me d1 and Δd. Would the lateral strain be Δd/d or ΔA/A? (A is area)

Yes, assuming that the motion is in one dimension, does an integral of zero of a v-t curve indicate that the particle has traveled back to the origin or hasn't moved at all?

Say you have a v-t diagram for the motion of a particle in one dimension where the velocity is positive at first and then negative later. If you integrate and get zero, why doesn't that mean that the particle started moving and then came back to the origin?

Homework Statement A point begins at rest at x = 0 and accelerates at 1.09 m/s^2 to the right for 10 s. It then continues at constant velocity of 10.9 m/s for 8 more seconds. In the third phase of its motion, it decelerates at 5 m/s^2 and is observed to be passing again through the origin when...

Nevermind I figured it out... I made a mistake by normalizing the resultant, which in turn messed up my final answer.

Theoretical physics is basically just a mathematical framework that models what we observe in the natural world. It's just a model, and like every other model it can be improved upon. Classical mechanics is pretty figured out but there is still research in the field today (mostly in mechanical...

Yes I have been using MATLAB to sketch and generate random examples. Here is one... a = <0.3814, 0.9023, 0.2010> c = <0.3965, 0.7378, -0.5463> The angle between these vectors is 45 degrees. I want a vector b such that b is orthogonal to a AND 45 degrees from c. Graphically speaking...

I have two vectors: a = <ax, ay, az> and c = <cx, cy, cz> which have an angle of 45 degrees between them. If I get another vector by b = c - a then shouldn't b be orthogonal to a? I'm assuming this since a + b = c

Are eigenvalue problems and boundary value problems (ODEs) the same thing? What are the differences, if any? It seems to me that every boundary value problem is an eigenvalue problem... Is this not the case?

That is extremely vague, but you could start with the diffusion equation

I just realized that the initial velocity vector is the same thing as the initial angle. Nevermind and thank you!