Recent content by Palpatine

Lets suppose device A measures the position of a particle very accurately. Device B now cannot measure its momentum to high accuracy due to the uncertainty principle. But let's suppose that neither A nor B can ever communicate their findings to the rest of the world. Now the uncertainty...

I made this pic to illustrate my problem. A spaceship (labeled B) departs from a space station (labeled A) at 80% the speed of light (0.8c). A applies the time dilation principle and calculates that B's clocks are running slower than his. Some time later a smaller craft (labeled C) detaches...

c = correlation between the IQs of parents and children s = standard deviation for IQs of the group the parents are sourced from m = mean IQ of the group the parents are sourced from Assume the distribution of IQs for the group the parents are pulled from is normal. What is the...

The subscript A denotes (in America) and E (in Europe). I_{A} = \frac{V_{A}}{R} I_{E} = \frac{2\times{V_{A}}}{R} = 2\times{\frac{V_{A}}{R}} Now substitute I_{A} for \frac{V_{A}}{R} I_{E} = 2\times{I_{A}}

Also note where it multiplies vectors it means cross product and also that you must do it in the order specified because v x u is not equal to u x v

A vector of length 1 multiplied by a constant is the same as scaling the vector with that amount. Consequently its also the same as making the length of the vector the same as the amount you multiplied it with. Thus if you divide a vector by its magnitude ( ||v|| ), it yields a vector of...

If you have a vector library you only have to do it once and adapt your drawing code or whatever to use the coordinates in the vector object. Remember the new position vector is the old one + old velocity vector * (delta t).

k is the unit vector in the z (up direction) <0,0,1>

Let \vec{v} be the 3-dimensional velocity vector. Let \Delta{t} be the time since the last update(frame) of the simulation. Let m be the mass of the ball. Let \vec{v}\prime be the new updated velocity vector. Now \vec{v}\prime=\vec{v} -...

Do you have equations that yield the drag and magnus given a certain velocity? The drawing only illustrates the orientation of the forces relative to the velocity.

You need to set up a differential equation relating the distance from the Earth to the acceleration and solve it.

I think that's analogous to asking how you balance an egg on the tip of a pen.

I remember this from when i was a pup. Make a soap boat! http://tastesalike.com/ksf/projects/project1010.html

Concerning that buoyancy issue, I think what holly meant was what if the object is completely smooth and pinned to the bottom so that no water (or anything else) comes between the object and the bottom. If this is the case then there would be no upward buoyancy force. The water pressure will...

For a Euler path to exist (each edge traversed exactly once) two vertices need to have odd degree and the rest must have even degree. The graph has vertices with degrees, 5,5,5,9,4,4 So it looks like a no-go. The last drawing i posted had 5,4,4,4,4,9. So that at least checks out.