# All Questions

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### Extracting times of hits from a composite detector response

I have a detector that registers a sequence of "hits" over a period of time. Each hit produces a signal that has the approximate form ...
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### Sum of static and dynamic pressure in a tube constant?

The sum of static pressure and dynamic pressure is said to be constant along a streamline. Except for energy conservation reasons I don't understand why that is. Static pressure is proportional to ...
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### Principle of electrical machine by vk R mehta complete ebook needed [on hold]

I need the ebook for my exam on Wednesday(expecially dc generator and dc motor chapter)
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### Tensor Notation Puzzle

I have hesitated to ask this question for fear of someone tagging it as a duplicate. It comes close to what others might have asked but I am looking for particular answers to this puzzle. Using ...
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### Finding net force [on hold]

Buoyancy and high altitude ballooning. Buoyant forces are supplied by every fluid (liquid or gas), it’s the mechanism that sends high altitude balloons all the way up to the stratosphere. For gases, ...
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### Interaction pictures of Quantum Mechanics

I want to understand the Schrödinger, Heisenberg and interaction picture and have a few questions about them: So in general you have a time-dependent Hamiltonian $H$, as for example the potential may ...