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  1. Answers
    4
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    576

    Net Force on such a rock must...

    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/N-body_problem
  2. Isn't fractional model of quarks electric charge wrong?

    According to ahmadreza estakhr model of quarks with integer electric charge, Up-type quarks have no electric charge (0), and only Down-type quarks could have electric charge of minus or plus one(-1...
  3. Answers
    18
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    1,013

    Neutron star - Wikipedia, the free encyclopedia...

    Neutron star - Wikipedia, the free encyclopedia
  4. Answers
    1
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    499

    What is Mathematical Equation of Explosion?

    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?
  5. Answers
    1
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    651

    Iodine clock reaction - Wikipedia, the free...

    Iodine clock reaction - Wikipedia, the free encyclopedia
  6. Question: Relativity

    by physic
    Answers
    2
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    385

    Lorentz Factor: \gamma=\frac{25}{10}Speed...

    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}}
  7. Estakhr's law of the photoelectric effect is...

    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...
  8. Ahmad Reza Estakhr Proved Albert Einstein Wrong, Didn't he?

    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...
  9. Answers
    2
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    359

    What was reference of Newton?

    What was reference of Newton which led to Gravitational law?W=mg(Surely it was not an apple!)
  10. Answers
    3
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    665

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

    http://en.wikipedia.org/wiki/Cramer's_rule Cramer's Rule
  11. Answers
    0
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    671

    differential problems

    what is difference between (dx^2) and (dx)^2 and (d^2x)?
  12. Question: Physics answerer

    by physic
    Answers
    1
    Views
    621

    You need to know what is distance between you and...

    You need to know what is distance between you and the tree too
  13. Answers
    1
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    668

    Yep!

    Yep!
  14. Answers
    1
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    500

    this is simple: ax^2+bx+c=0...

    this is simple:
    ax^2+bx+c=0
    x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}
  15. Answers
    0
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    1,068

    Cauchy–Schwarz inequality for complex numbers

    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|
  16. Answers
    3
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    1,284

    this is all about initial velocity v_i final...

    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...
  17. how to find position and time for wave function

    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
  18. Question: Wave function

    by physic
    Answers
    1
    Views
    735

    wave function

    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...
  19. Question: Ask physics help

    by physic
    Answers
    7
    Views
    1,043

    What happens when the liquid inside a wine glass...

    What happens when the liquid inside a wine glass is more dense?
    music note of glass will change
    Will the frequency change? yes
  20. Answers
    1
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    759

    Fourier Transform...

    Fourier Transform
  21. r = (i + 3 j) + \lambda(-i - j) question is not...

    r = (i + 3 j) + \lambda(-i - j)
    question is not clear!
  22. Question: Summation swapping

    by physic
    Answers
    1
    Views
    669

    Summation (http://en.wikipedia.org/wiki/Summation)

    Summation
  23. \frac {3}{4}y^2+ {\frac {7}{4}y-5=0

    \frac {3}{4}y^2+ {\frac {7}{4}y-5=0
  24. 3x y=15 4x-3y=7 xy=\frac {15}{3} xy=5 x=\frac...

    3x y=15
    4x-3y=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
  25. Question: Ask physics help

    by physic
    Answers
    7
    Views
    1,043

    Tacoma Narrows Bridge (1940)...

    Tacoma Narrows Bridge (1940)
  26. Question: Ask physics help

    by physic
    Answers
    7
    Views
    1,043

    Each object have a special music note , by...

    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...
  27. Question: Ask physics help

    by physic
    Answers
    7
    Views
    1,043

    This is all about Resonance...

    This is all about Resonance

    Breaking a wine glass using resonance, oscillating a wine glass by playing sound at its resonance frequency.
  28. is there any other ways to solve this natural logarithm

    is there any other ways to solve this natural logarithm: \ln {(a b)}
    for example
    \ln {ab}=\ln {a} \ln {b}
  29. Answers
    2
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    1,393

    2^y=x \to \log_2 {x}=y note: \log_2 {x}=\frac...

    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
  30. F_G=\frac {GmM}{R^2}\to F_E=\frac...

    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...
  31. Answers
    3
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    773

    F_G=\frac {GmM}{R^2}

    F_G=\frac {GmM}{R^2}
  32. According to Estakhr, Ahmad Reza (MG13 - Talk...

    According to Estakhr, Ahmad Reza (MG13 - Talk detail)Title: Newton's universal gravitational constant actually is NOT constant. when the Newtonian constant of gravitation...
  33. Answers
    9
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    1,006

    A) 25% B) 50% C) 35% D) 25% there are 4 option...

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

    by physic
    Answers
    3
    Views
    537

    When a body is moving uniformly in a straight...

    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!
  35. Answers
    2
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    910

    F=m.a m\to kg a\to \frac {m}{s^2} F\to...

    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
  36. physics: Origin of all physical forces - Estakhr's Constant

    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...
  37. Question: Wave function

    by physic
    Answers
    3
    Views
    783

    Thank you but I need answer too

    Thank you but I need answer too
  38. Question: Wave function

    by physic
    Answers
    3
    Views
    783

    Thank you but I want answer of that relation too

    Thank you but I want answer of that relation too
  39. Question: Wave function

    by physic
    Answers
    3
    Views
    783

    wave function

    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 :...
  40. Answers
    0
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    386

    uncertainty on Operator

    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...
  41. $s=ut+\frac {1}{2}at^2$ this is displacement of...

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

    by physic
    Answers
    2
    Views
    817

    P=F.t

    P=F.t
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