Equilibrium of a uniform bar inclined at an angle]]>

What is "coefficient of restitution between A and B" mean ?

Thank you for helping]]>

She then fires a tethered capsule...

Gravitational time dilation depth charge]]>

this is actually mohr's circle formula, forget about the theory,let's focus on the mathematics part. I couldnt understand why the tan( 2 θs1) = -(σx -σy) / 2τxy ?

2θs1 is outside the triangle

angle outside triangle]]>

What do you consider to be the most interesting alien race?]]>

This is...

Where to discuss fringe science?]]>

(linear combination of atomic orbitals):

Lets consider two atoms which are bond together with a covalent bond. Lets consider any sets of wavefunctions [itex]|n\rangle[/itex] for n=1,2,....,N. Lets call orbital...

tight binding model (covalent bonding)]]>

Building a portable AC for my car]]>

The...

NPN BJT transistor: base voltage / emitter current]]>

What are the similarities between a sociopath and an asperger?

Can someone be both?

Is sociopathy someshing you born with or you can get it during life?]]>

First I would like to mention that I...

How can Bernoulli's equation be applied in this problem ?]]>

Can convergent nozzles convert heat into motion?]]>

A family of circles can be constructed as ##x^2 + y^2 + {f_1}x + {g_1}y + h_1 + k(x^2 + y^2 + {f_2}x + {g_2}y + h_2) = 0##.

By altering the k, an...

Family of Circles]]>

Does the physics allow to do that?

]]>

http://www.nasa.gov/mission_pages/newhorizons/main/index.html]]>

Snubber circuit]]>

where

U(x, λ) = −(i/λ) S(x)]]>

What is Voltage really?]]>

imagine the following scenario: a persons sits and stands up. At mid- distance the person's hits the head on a shelf that is right above the head. A Human Head weighs about four Kilogramm. the question I have now is, what is the mass of the impact? is it exactly four kilogram or more,...

Mass of an impact]]>

Then I...

Fun question: Can this fish swim?]]>

Code (Text):

Dec 31, 2015 Close 17425.03

Jan 20, 2016 Open 15,989.45

Low 15,450.56

Close 15,766.74 Down 249.28(1.56%)

Jan 20, 2016 Open 15,989.45

Low 15,450.56

Close 15,766.74 Down 249.28(1.56%)

What's going on with the US/Global economies?]]>

imgur link: http://i.imgur.com/0Zc8nQe.png

Y-Delta transformations...

Will an infinite impedance cause no phase shift?]]>

First, I'll start with the open container. Say water is at some temperature, exposed to low humidity atmosphere, and begins to evaporate. The water that evaporates diffuses never to return to the container. To find the final...

Cooling Water in a Closed Container]]>

Scenario 2: Alice drops into the event horizon from the outside and notices nothing. But as she nears it, she...

Event horizon and sudden acceleration]]>

I'm wondering how different potentials, such as the Dirac-Delta potential, linear potential, quandratic potenial, etc., are implemented experimentally. I only understand how the Schrodinger equation is solved if these are the potentials and I'd like to have a better understanding of quantum...

How are different potentials implemented experimentally?]]>

P=0, z=ζ

is very common when studying irrotational flows. When cast with the Bernoulli equation, it gives rise to the famous dynamic boundary conditionn, which is much more convenient :

∂

But what happens if the...

Boundary condition question]]>

The path integral for the phi-cubed theory is equation 9.11 in the book. Please read...

Srednicki's QFT: Feynman Rules and Feynman Diagrams]]>

I know this is kind of a broad...

At what point does classical EM become relativistic EM?]]>

Does LISP exist?]]>

it looks very trivial to me becauese Cauchy's theorem states "if f(z) is holomorphic, its closed loop integral

will be always 0". Is this what the author is trying to say? whats the necesseity of the larger disk D' at here?...

Complex Analysis, holomorphic in circle.]]>

I imagined a spinning ring of radius R, spinning at an...

Questions about a spinning disk/ring and Lorentz boosts]]>

Omissions in Mathematics Education: Gauge Integration

...

Omissions in Mathematics Education: Gauge Integration - Comments]]>

Effect of Special Relativity on spacescraft]]>

Numerical Solution for Complex PDE (Ginzburg-Landau Eqn.)]]>