User Carl

3 votes

1 answer

589 views

Derive formula for air resistance $F = \frac{1}{2}CAdv^2$ through dimensional analysis

asked Dec 7, 2018 at 21:11

3 votes

2 answers

291 views

Why is this electromagnetic field a wave?

electromagnetism waves electromagnetic-radiation

asked Nov 17, 2020 at 13:10

2 votes

1 answer

202 views

Sketch a B-H hysteresis curve of permanent magnet

electromagnetism symmetry magnetostatics

asked Oct 30, 2020 at 9:58

1 vote

2 answers

142 views

Why does the $\mathbf{B}$-field of a cylindrical magnet have no $\phi$-component

electromagnetism magnetic-fields

asked Oct 31, 2020 at 8:26

1 vote

2 answers

95 views

Polarization surface charge density on spherical surface - electromagnetics

electromagnetism charge polarization

asked Dec 12, 2020 at 20:01

1 vote

2 answers

197 views

Under what condition is an electrostatic field both solenoidal and irrotational?

electrostatics differentiation vector-fields

asked Jan 11 at 21:03

0 votes

2 answers

261 views

Initial acceleration concerning free fall

newtonian-gravity acceleration air buoyancy free-fall

asked Nov 21, 2018 at 14:16

0 votes

1 answer

91 views

Difference between pulling from center of mass, and from the top of a wheel

forces rotational-dynamics work moment-of-inertia angular-velocity

asked Mar 4, 2021 at 12:22

0 votes

4 answers

66 views

Homework: Acceleration and momentum

homework-and-exercises momentum energy-conservation acceleration

asked May 5, 2021 at 9:19

0 votes

1 answer

58 views

Behavior of $r$-component of a $\mathbf{B}$-field inside cylindrical magnet

electromagnetism magnetic-fields vector-fields

asked Oct 31, 2020 at 15:29

0 votes

1 answer

50 views

Which expression represents a plane wave propagating in free space? [closed]

homework-and-exercises waves electromagnetic-radiation

asked Nov 22, 2020 at 17:03

0 votes

2 answers

92 views

Determine the electric field in the region enclosed by a spherical conductor and the surface charge density

homework-and-exercises electric-fields charge gauss-law

asked Sep 20, 2020 at 13:42

0 votes

2 answers

194 views

Why do two similar objects not hit the ground at different times?

gravity velocity drag air

asked Sep 29, 2020 at 16:52

0 votes

1 answer

273 views

What is the $\mathbf{H}$-field inside and outside the magnet?

electromagnetism magnetic-fields

asked Oct 25, 2020 at 12:00

-1 votes

1 answer

134 views

Electromagnetics - how to choose a proper normal vector? [closed]

homework-and-exercises electromagnetism waves electromagnetic-radiation

asked Dec 1, 2020 at 16:25

-1 votes

5 answers

145 views

Find the normal force on beam in asymmetrical scenario [closed]

homework-and-exercises forces momentum torque

asked Feb 17, 2021 at 10:36

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16 Questions

Derive formula for air resistance $F = \frac{1}{2}CAdv^2$ through dimensional analysis

Why is this electromagnetic field a wave?

Sketch a B-H hysteresis curve of permanent magnet

Why does the $\mathbf{B}$-field of a cylindrical magnet have no $\phi$-component

Polarization surface charge density on spherical surface - electromagnetics

Under what condition is an electrostatic field both solenoidal and irrotational?

Initial acceleration concerning free fall

Difference between pulling from center of mass, and from the top of a wheel

Homework: Acceleration and momentum

Behavior of $r$-component of a $\mathbf{B}$-field inside cylindrical magnet

Which expression represents a plane wave propagating in free space? [closed]

Determine the electric field in the region enclosed by a spherical conductor and the surface charge density

Why do two similar objects not hit the ground at different times?

What is the $\mathbf{H}$-field inside and outside the magnet?

Electromagnetics - how to choose a proper normal vector? [closed]

Find the normal force on beam in asymmetrical scenario [closed]