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Net Force on such a rock must be:F_{net}=ma=mg_{earth}\frac{1}{2}\rho v^2AC_dhttp://en.wikipedia.org/wiki/Terminal_speedhttp://en.wikipedia.org/wiki/Nbody_problem

According to ahmadreza estakhr model of quarks with integer electric charge, Uptype quarks have no electric charge (0), and only Downtype quarks could have electric charge of minus or plus one(1...

Neutron star  Wikipedia, the free encyclopedia

Is there a Mathematical equation for explosion, blast wave or shock wave?for example this is mathematical equation of weight W=mg what is mathematical equation of Explosion?

Iodine clock reaction  Wikipedia, the free encyclopedia

Lorentz Factor: \gamma=\frac{25}{10}Speed Parameter: \beta=\sqrt{1\frac{1}{\gamma^2}}so\beta=\sqrt{1\frac{100}{625}}=\sqrt{\frac{21}{25}}

Estakhr's law of the photoelectric effect is Consistent with Quantum Mechanics and Schrödinger equation.Schrödinger equation  Wikipedia, the free encyclopedia, (Nobel prize in physics 1921 was...

This is Einstein's law of the photoelectric effect: E=K_e+W,and This one is Estakhr's law of the photoelectric effect: \hat E\Psi=\hat H_e\Psi,\hat E\Psi=\frac...

What was reference of Newton which led to Gravitational law?W=mg(Surely it was not an apple!)

http://en.wikipedia.org/wiki/Cramer's_rule Cramer's Rule

what is difference between (dx^2) and (dx)^2 and (d^2x)?

You need to know what is distance between you and the tree too


this is simple:
ax^2+bx+c=0
x=\frac{b\pm\sqrt{b^24ac}}{2a}

how we can proof Cauchy–Schwarz inequality for these two complex numbers?
z=a+ib
w=c+id
in the case of triangle inequality
z+w\le z+w

this is all about
initial velocity v_i
final velosity v_f
acceleration constant a
time t
relation between them is
v_f=at+v_i
there are two types of displacement
velocity constant that is...

this is wave function \Psi{(r,t)}=Ae^{i(kr\omefa t)}
i know what is wave vector k and angular frequency \omega
but i don't know what r position ad time t means

this is simple of wave function:
\Psi{(\vec r, t)}=Ae^{i(\phi+\vec k .\vec r  \omega t)}
\Psi{(\vec r, t)}=A\cos{(\phi+\vec k .\vec r  \omega t)}+i\sin{(\phi+\vec k .\vec r  \omega t)}
i...

What happens when the liquid inside a wine glass is more dense?
music note of glass will change
Will the frequency change? yes


r = (i + 3 j) + \lambda(i  j)
question is not clear!


\frac {3}{4}y^2+ {\frac {7}{4}y5=0

3x y=15
4x3y=7
xy=\frac {15}{3}
xy=5
x=\frac {7+3y}{4}
\frac {7+3y}{4}y=5
\frac {3y^2){4}+\frac {7y}{4}5=0
a=\frac {3}{4}
b=\frac {7}{4}
c=5

Tacoma Narrows Bridge (1940)

Each object have a special music note , by playing sound at its resonance frequency you are able to play that note then you are able to break that object: Tacoma Narrows Bridge
But you are able...

This is all about Resonance
Breaking a wine glass using resonance, oscillating a wine glass by playing sound at its resonance frequency.

is there any other ways to solve this natural logarithm: \ln {(a b)}
for example
\ln {ab}=\ln {a} \ln {b}

2^y=x \to \log_2 {x}=y
note: \log_2 {x}=\frac {\log_{10} {x}}{\log_{10} 2}
exaple: 3^2=9 \to \log_3 {9}=2

F_G=\frac {GmM}{R^2}\to F_E=\frac {(\lim_{\beta\to 0} \underline B.\beta^3.\cancel {R^2})mM}{\cancel {R^2}}=\lim_{\beta\to 0}\underline B \beta^3 mM
this equation proof that Estakhr's Gravitational...


According to Estakhr, Ahmad Reza (MG13  Talk detail)Title: Newton's universal gravitational constant actually is NOT constant. when the Newtonian constant of gravitation...

A) 25% B) 50% C) 35% D) 25%
there are 4 option and 3 chance D=A
answer: 33.33%

When a body is moving uniformly in a straight line with a velocity of 5m/ s . How we can find grafically distance covered by it in 5 seconds!

F=m.a
m\to kg
a\to \frac {m}{s^2}
F\to N(Newton=kg.\frac {m}{s^2}
F_N=20_kg.2_{\frac {m}{s^2}}
F=40 N

Only a few weeks ago I would challenge these theories based on the evidence we can find on social media.
"newton's universal gravitational constant actually is NOT constant"
newton's universal...

Thank you but I need answer too

Thank you but I want answer of that relation too

Wave_function is a probability amplitude in quantum mechanics describing the quantum state... etc
I want to know that what is answer of this relation :...

http://www.texify.com/img/\normalsize\!\langle\hat A\rangle.gif is the expectation value of http://www.texify.com/img/\normalsize\!\langle\hat A\rangle.gif
I don't know what means expectation...

$s=ut+\frac {1}{2}at^2$ this is displacement of an accelerated objects

