Question

How do I calculate $ \frac{\partial}{\partial t} \delta\left(\vec{r}-\vec{r}_{i}(t)\right)$

score 71 · Answer 1 · 2024-01-23 14:29:24

71

Views

How do I calculate $ \frac{\partial}{\partial t} \delta\left(\vec{r}-\vec{r}_{i}(t)\right)$

Published on 23 Jan 2024 - 14:29

score 34 · Answer 2 · 2024-01-24 18:56:36

34

Views

Why is $ \int \Phi \vec{\nabla} \cdot \vec{E} d V = \int \vec{E} \cdot \vec{\nabla} \Phi d V+\int \vec{\nabla} \cdot(\vec{E} \Phi) d V$?

Published on 24 Jan 2024 - 18:56

score 150 · Answer 3 · 2024-01-24 19:12:22

150

Views

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score 51 · Answer 4 · 2026-03-26 23:01:06

51

Views

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score 52 · Answer 5 · 2026-04-10 20:07:45

52

Views

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score 60 · Answer 6 · 2026-03-30 09:45:09

60

Views

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score 47 · Answer 7 · 2026-04-11 11:06:50

47

Views

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score 58 · Answer 8 · 2026-04-10 22:32:32

58

Views

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score 60 · Answer 9 · 2026-04-10 05:24:30

60

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15

Views

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score 89 · Answer 11 · 2026-03-30 09:49:46

89

Views

For non-square $n \times m$ matrices, when will $\| A \hat x\|$ be constant for all unit vectors $\hat x$?

Published on 30 Mar 2026 - 9:49

score 42 · Answer 12 · 2024-01-30 15:49:43

42

Views

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score 30 · Answer 13 · 2026-03-26 06:13:58

30

Views

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score 16 · Answer 14 · 2026-04-10 23:06:57

16

Views

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Published on 10 Apr 2026 - 23:06

score 28 · Answer 15 · 2026-04-10 22:05:52

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List Question

How do I calculate $ \frac{\partial}{\partial t} \delta\left(\vec{r}-\vec{r}_{i}(t)\right)$

Why is $ \int \Phi \vec{\nabla} \cdot \vec{E} d V = \int \vec{E} \cdot \vec{\nabla} \Phi d V+\int \vec{\nabla} \cdot(\vec{E} \Phi) d V$?

How can I overcome this sort of circular logic?

Linearizing a physics equation

How to use Euler-Lagrange equation to model a linear particle?

Rigid-body bars in a double pendulum setup

Finding an expression for the energy in terms of the fundamental constants.

Probability of collisions in the random n-body problem

Algebraic Proof that the Amplitude does not affect Frequency

Understanding discrete vs continuous density rates

For non-square $n \times m$ matrices, when will $\| A \hat x\|$ be constant for all unit vectors $\hat x$?

Numerically-Solving Coupled PDE-ODE System

Product of 3 or more Spherical Harmonics

Interpreting eigenvalues of non-normalized covariance matrix of time-series measurements

Calculate the field of a sphere with a homogenous distributed charge using Gaussian theorem and the 1st Maxwell Equation, flux integral calculation

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