haruspex's latest activity
-
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? -
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...
-
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...
-
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...
-
haruspex replied to the thread Correct statement about size of wire to produce larger extension.The given answer does not require exact linearity.
-
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...
-
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... -
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.
-
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...
-
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...
-
haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Either will do in principle, but I think it is more obvious if you take the longer hand as stationary. The tip of the shorter hand can...
-
haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Whoa, too much deference!☺️ Nothing to apologise for. My post #10 was wrong and I am glad you picked that up.
-
haruspex reacted to 256bits's post in the thread Distance between a Clock's hands when the distance is increasing most rapidly with Like.
Reading the comments from the video, the obviousness seems to be not ensured. A mixup of, or distinction, between velocity and distance...
-
haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Yes, my wording was sloppy. Will edit. As stated in post #1 the intent is clear.
-
haruspex replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Yes, and that is the easiest way to solve it: take the minute hand as stationary. That makes it obvious when the relative velocity of...