haruspex's latest activity
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haruspex replied to the thread Magnitude of buoyant force in fluids of different densities.Quite, because those velocities represent available choices and it is reasonable to rank choices based on the outcomes. What makes the... -
haruspex reacted to renormalize's post in the thread Magnitude of buoyant force in fluids of different densities with
Like.
But elementary physics texts regularly use shorthand terms like "point mass" (not "point object with mass") and "point charge" (not... -
haruspex replied to the thread Magnitude of buoyant force in fluids of different densities.That would have been clearer, yes. But consider.. 1. "Cars of velocities v1 > v2 > v3 are driven from A to B. Rank the cars in order...
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haruspex replied to the thread Magnitude of buoyant force in fluids of different densities.The wording is awkward but not actually wrong. It means rank the fluids according to the buoyant forces they are exerting, but since...
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haruspex replied to the thread Magnitude of buoyant force in fluids of different densities.I have always assumed that Archimedes figured this out by imagining replacing the submerged portion with an equal volume of water...
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haruspex replied to the thread Magnitude of buoyant force in fluids of different densities.What did Archimedes realise about the quantity of fluid displaced by a floating object?
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haruspex replied to the thread Voltage vs Distance graph for a given E vs D graph.To my eye, those two curves look different. The second is close to being a quadrant of a circle but the first exhibits changing...
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haruspex replied to the thread Voltage vs Distance graph for a given E vs D graph.That analogy works, but it is not clear how you used it in this question. I assume you reversed it, so taking the given E/x graph as...
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haruspex replied to the thread Voltage vs Distance graph for a given E vs D graph.I am not sure I understand either of those two descriptions. As I read them, you are saying that both have negative gradients...
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haruspex replied to the thread Correct statement about size of wire to produce larger extension.The given answer does not require exact linearity.
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haruspex replied to the thread Correct statement about size of wire to produce larger extension.Yes, same strain with longer wire means greater elongation. Take note of two things about your first attempt: you made an assumption...
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haruspex reacted to Steve4Physics's post in the thread Distance between a Clock's hands when the distance is increasing most rapidly with Like.
Well (from what I've read), it depends. E.g. "A bluff charge is intended to intimidate, not to attack. A bluffing bear may run...
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haruspex replied to the thread Correct statement about size of wire to produce larger extension.Not a good assumption. You have not considered what determines when a wire of a given material will break.
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haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.You are being chased by a bear. You can run at the same speed in any direction. Which way do you run? The a priori knowledge comes...
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haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.I don’t even know what that means. Treat the minute hand as fixed (i.e. work in the frame of the minute hand). The tip of the hour hand...