Question

Can magnitude of a vector can be negative?

score 431 · Answer 1 · 2026-04-12 14:31:11

431

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Can magnitude of a vector can be negative?

Published on 12 Apr 2026 - 14:31

score 49 · Answer 2 · 2026-04-16 09:51:15

$ABCDE$ is a regular pentagon with $\overrightarrow{AB}=a$ and $\overrightarrow{BC}=b$. Find $\overrightarrow{EA}$

score 222 · Answer 3 · 2026-04-13 04:00:07

222

Views

About distances between a point and a plane

Published on 13 Apr 2026 - 4:00

score 50 · Answer 4 · 2026-03-26 04:33:13

50

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Why do I obtain two value for tangential velocity when a ball slides in a semicircular ramp?

Published on 26 Mar 2026 - 4:33

score 94 · Answer 5 · 2026-04-15 21:39:42

94

Views

Show that $p_i$ is polynomial function in $Pol_n(\mathbb{R})$ and $\{ \Phi(p_1),...,\Phi(p_{n+1}) \}$ is basis of $\mathbb{R}^{n+1}$

Published on 15 Apr 2026 - 21:39

score 188 · Answer 6 · 2026-04-15 22:41:24

188

Views

Use PCA to calculate the direction vector of the given data set.

Published on 15 Apr 2026 - 22:41

score 144 · Answer 7 · 2026-04-11 18:15:06

144

Views

Levi civita cross products of spherical unit vectors

Published on 11 Apr 2026 - 18:15

score 55 · Answer 8 · 2026-04-15 16:56:39

55

Views

Show: $\{p_1,...,p_{n+1}\}$ basis of $Pol_n(\mathbb{R}), \Phi$ bijective and $f\in Pol_n(\mathbb{R})$ is zero function if $n+1$ different roots exist

Published on 15 Apr 2026 - 16:56

score 58 · Answer 9 · 2026-04-16 04:03:06

58

Views

Sample the vectors in the plane

Published on 16 Apr 2026 - 4:03

score 339 · Answer 10 · 2026-04-14 09:27:06

339

Views

Find intersection point of two lines in 3D

Published on 14 Apr 2026 - 9:27

score 1.3k · Answer 11 · 2026-04-14 17:50:29

1.3k

Views

How to find the torque and mass of an object hanging from a bended bar?

Published on 14 Apr 2026 - 17:50

score 231 · Answer 12 · 2026-04-12 18:13:06

231

Views

Why do I obtain a zero net force in tension for a torque happening on a bar supported on its center?

Published on 12 Apr 2026 - 18:13

score 198 · Answer 13 · 2026-04-17 12:28:35

198

Views

Show that the vector $(\vec{a}+\vec{b}+\vec{c})$ is perpendicular to the plane

Published on 17 Apr 2026 - 12:28

score 56 · Answer 14 · 2026-04-16 23:55:31

If $\frac{d^2\vec{r}}{dt^2}=6t\hat{i}-24t^2\hat{j}+4\sin t \hat{k}$, then prove that $\vec{r}=(t^3-t+2)\hat{i}+(1-2t^4)\hat{j}+(t-4\sin t)\hat{k}$

score 276 · Answer 15 · 2026-04-16 13:22:43

Provet the following, for four points whose position vectors are $\vec{\alpha}, \vec{\beta}, \vec{\gamma}, \vec{\delta}$ are co-planar

List Question

Can magnitude of a vector can be negative?

$ABCDE$ is a regular pentagon with $\overrightarrow{AB}=a$ and $\overrightarrow{BC}=b$. Find $\overrightarrow{EA}$

About distances between a point and a plane

Why do I obtain two value for tangential velocity when a ball slides in a semicircular ramp?

Show that $p_i$ is polynomial function in $Pol_n(\mathbb{R})$ and $\{ \Phi(p_1),...,\Phi(p_{n+1}) \}$ is basis of $\mathbb{R}^{n+1}$

Use PCA to calculate the direction vector of the given data set.

Levi civita cross products of spherical unit vectors

Show: $\{p_1,...,p_{n+1}\}$ basis of $Pol_n(\mathbb{R}), \Phi$ bijective and $f\in Pol_n(\mathbb{R})$ is zero function if $n+1$ different roots exist

Sample the vectors in the plane

Find intersection point of two lines in 3D

How to find the torque and mass of an object hanging from a bended bar?

Why do I obtain a zero net force in tension for a torque happening on a bar supported on its center?

Show that the vector $(\vec{a}+\vec{b}+\vec{c})$ is perpendicular to the plane

If $\frac{d^2\vec{r}}{dt^2}=6t\hat{i}-24t^2\hat{j}+4\sin t \hat{k}$, then prove that $\vec{r}=(t^3-t+2)\hat{i}+(1-2t^4)\hat{j}+(t-4\sin t)\hat{k}$

Provet the following, for four points whose position vectors are $\vec{\alpha}, \vec{\beta}, \vec{\gamma}, \vec{\delta}$ are co-planar

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