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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 10 months |
| seen | Apr 29 at 23:10 | |
| stats | profile views | 35 |
I'm a dilettante programmer with many other interests including but not limited to math, physics, Singularitarianism, AI, music, and gaming.
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Apr 24 |
revised |
Finding the wavelength of an electron in its ground state? deleted 3 characters in body |
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Apr 24 |
comment |
Finding the wavelength of an electron in its ground state? Given an average radius of the ground state ($5.29*10^-11m$) could I use the aforementioned method? Moreover, you mentioned finding the uncertainty in position - would $ΔxΔP = h/4π$ be of use here somehow? |
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Apr 24 |
revised |
Finding the wavelength of an electron in its ground state? edited body |
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Apr 24 |
asked | Finding the wavelength of an electron in its ground state? |
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Feb 26 |
asked | The universe's lack of an 'edge', and how that relates to the multiverse? |
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Feb 26 |
revised |
Meaning of subscript in $V=\frac{1}{2}\left(\frac{d^2 V}{{dq_i}{dq_j}}\right)_0$ added 224 characters in body |
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Feb 26 |
awarded | Commentator |
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Feb 26 |
comment |
Meaning of subscript in $V=\frac{1}{2}\left(\frac{d^2 V}{{dq_i}{dq_j}}\right)_0$ Oops, I guess. It's changed now though. Also, and I just now realized this, but in Physics we have Epsilon nought which obviously does not mean initial permittivity of free space! I'll make a futile edit. |
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Jan 11 |
accepted | At what rate does a rotating black hole lose mass via Hawking Radiation? |
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Dec 11 |
revised |
Using thermodynamics and Kinematics together to solve a parachuter problem? deleted 5 characters in body |
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Dec 11 |
comment |
Using thermodynamics and Kinematics together to solve a parachuter problem? No rates were given. All we were given was the ideal gas law formula, the drag formula, the density formula, a formula for Earth's radius according the the latitude, and the position equation ($x= xi + vit + .5at^2$). We were meant to find the rates individually and then use them to find other rates etc. in order to finally arrive at displacement. |
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Dec 11 |
comment |
Using thermodynamics and Kinematics together to solve a parachuter problem? True, but the problem here is that pressure, density, and temperature are all changing, and those rates are not given (this is a related rates problem for calculus.) I'll try just finding Temp though. But, what can I do about not having velocity? |
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Dec 11 |
comment |
Using thermodynamics and Kinematics together to solve a parachuter problem? Pressure, Volume, molar weight of atmosphere, number of moles, gas constant, drag coefficients, and avg density are given (among some others). |
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Dec 11 |
asked | Using thermodynamics and Kinematics together to solve a parachuter problem? |
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Nov 25 |
awarded | Supporter |
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Nov 25 |
comment |
At what rate does a rotating black hole lose mass via Hawking Radiation? That makes sense. However, I went to your wikipedia link, and my doubt was rekindled. You had $dM/dt = Pc^2$ due to energy-mass equivalence. Wikipedia has $P = -(dE/dt) = -c^2(dM/dt)$. Therefore, according to wikipedia, $dM/dt = P/-c^2$ |
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Nov 21 |
comment |
At what rate does a rotating black hole lose mass via Hawking Radiation? As Lubos mentioned, do in your power equation do we also equate G and c to 1? Also, is my $dM/dt = (c^2(dR/dt))/(c^4)$ wrong and why? Also, how can you defend your rate of mass loss? No offense, but a few answers have emerged and they all seem promising. |
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Nov 16 |
comment |
At what rate does a rotating black hole lose mass via Hawking Radiation? I actually didn't use $G$ to get $R$. I first heard that $R = 2GM/c^2$, but I later read that it was equal to $2M$. I'm not so sure that $R = 2M$ is correct. I'll re-run the necessary parts of my work with the other formula for $R$. Anyway, if I what should I use $G = 1$ in and where? All I did was use $R$ to find $dM/dt$ in your mass loss rate formula. My big problem now is finding $dR/dt$ so that I can find the rate the volume decreases in relation to mass loss. |
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Nov 16 |
comment |
At what rate does a rotating black hole lose mass via Hawking Radiation? So, regarding your second to last formula, if Energy to be radiated away is given by $R$ when $D = 4$ does that mean that the rate of mass loss is given by $dM/dt = (c^2(dR/dt))/(c^4)$ when you factor in Energy - Mass equivalence? Also, is the $R$ in your formula radius or redshift factor? I have no background in upper level physics, so this is intense speculation. |
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Nov 16 |
comment |
At what rate does a rotating black hole lose mass via Hawking Radiation? I don't need all of that to find the mass loss rate do I? Bottom line, what is the formula? Call me lazy, but I'd really like a formula that can model the mass loss rate itself. I don't want to derive your horizon formula to get dm/dt. There has to be something easier. At least I hope there is. |
