jnuz73hbn's latest activity

  • J
    jnuz73hbn reacted to anuttarasammyak's post in the thread Charged sphere with Like Like.
    if you have no troubles in derivation of these formula which give values such and such in calculation, I am afraid that I have nothing...
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    jnuz73hbn replied to the thread Charged sphere.
    My question is whether these formulas are sufficient to answer the question or if something is missing.
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    jnuz73hbn replied to the thread Charged sphere.
    Is it correct for the problem? $$ r_{\max} = \sqrt{\frac{q^2}{16\pi\varepsilon_0mg}} = \sqrt{ \frac{(3.9\times10^{-7}\,\mathrm C)^2}...
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    jnuz73hbn replied to the thread Charged sphere.
    Ceiling = conducting and grounded (with a thin insulating surface layer). Sphere = insulating spherical shell, with homogeneous fixed...
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    jnuz73hbn replied to the thread Charged sphere.
    Given values are: q= 3.9 * 10^-7 C , m= 2,8 *10^-3 kg $$ r_{\max} = \sqrt{ \frac{(3.9\times10^{-7})^2}...
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    jnuz73hbn replied to the thread Charged sphere.
    for the first I calculated this. Is that formula correct for r_max? Because 0,7m for a radius of a sphere is very big. $$ r_{\max} =...
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    jnuz73hbn posted the thread Charged sphere in Introductory Physics Homework Help.
    $$ r_{\max}=\sqrt{\frac{kq^2}{4mg}} $$ $$ r_{\min}=\sqrt{\frac{k|q|}{E_{\mathrm{crit}}}} $$
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