haruspex's latest activity
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haruspex replied to the thread Spherical capacitor RC system -- determine steady state charges.Please post your result and the official result if known. -
haruspex replied to the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations.Then I misinterpreted your last diagram. I now presume it is a top view. That being so, a given movement of the piston raises twice... -
haruspex replied to the thread Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations.The lower portion is not raising any water, only moving it sideways. -
haruspex replied to the thread Errors and significant figures.Just a follow-up on the equation I gave in post #18… I felt it was surprisingly inelegant, then I realised it could be rewritten as... -
haruspex replied to the thread Errors and significant figures.Part of the problem is that there are two common systems which many (most) conflate. Either imply the uncertainty from the number of... -
haruspex replied to the thread Errors and significant figures.It depends what you mean by the uncertainty. In many contexts you want the statistical uncertainty, i.e. standard deviation. If X and Y... -
haruspex replied to the thread A cylinder connected to a hanging mass.The horizontal forces on it are the friction from the floor, the pull of the rope, and the normal force from the wall. The first two...