Greg Harrington
Reputation
543
Next privilege 1,000 Rep.
Create new tags
 Nov 30 awarded Popular Question Oct 9 awarded Notable Question Sep 24 awarded Autobiographer Sep 23 awarded Popular Question Aug 11 awarded Popular Question Jul 2 awarded Inquisitive Jul 2 awarded Curious May 1 comment Is this how I find the rate of change of internal energy for filling a vessel? @KyleKanos how would I use the T-ds equation to find an expression for $\frac{ds}{dt}$? I wanted to use $T\frac{ds}{dt}=\frac{du}{dt}+P\frac{dv}{dt}$ but T in the tank is changing with time. And it doesn't look like i could apply the product rule to that since it's already in the differential form May 1 comment Is this how I find the rate of change of internal energy for filling a vessel? yes i have all the variables. I just wanted to know if that step was right. I was given the expression for the change in pressure, and i determined change in $v$ with the ideal gas law. and i found dhdt by the energy balance May 1 asked Is this how I find the rate of change of internal energy for filling a vessel? Apr 25 awarded Popular Question Apr 24 awarded Popular Question Apr 18 comment Thermal resistance of thermal interface materials? @ThePhoton It all makes sense now that I remember the coolant is being constantly replenished and I assume it's a constant temperature. Thanks guys Apr 18 comment Thermal resistance of thermal interface materials? Lets say the chip needs to operate at $T_H$ and it dissipates constant 2 W. If we have a low total resistance, then doesnt that make the coolant temperature very close to $T_H$? But you just said you want it as low as possible. This is why I am getting confused Apr 18 asked Thermal resistance of thermal interface materials? Apr 14 asked How do I determine resistivity from electron defects of high purity gold? Apr 14 accepted RMS Free Path vs Mean Free Path Apr 13 comment RMS Free Path vs Mean Free Path I have no idea what to even do with that honestly. I am not a molecular physics guy. I just need to find a formula for RMS free path and there is nothing on google. Apr 13 asked RMS Free Path vs Mean Free Path Apr 11 comment Molecular mean free path probability I'm not really sure what kind of variable the $\xi$ is. It is just the distance the molecule will travel without a collision. I'm guessing it's continuous since it can be 0.01 or 0.012 or 0.013. Are you essentially saying that I should take "at least" and "greater than" to be the same?