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-Dominant- [34]
3 years ago
8

What best describes the angle between a changing electric field and the electromagnetic wave produced by it? (2 points)

Physics
2 answers:
Leno4ka [110]3 years ago
6 0

Answer:

Option (A) is the correct answer of this question.

Explanation:

The angle between a changing electric field and the induced electromagnetic wave is always equal to the right angle. The electrical field, the magnetic field and the EM wave are perpendicular. This gives its transverse form to the electromagnetic waves.

  • A shifting electric field generates a changing magnetic field that in effect causes a changing electrical field.
  • This means the source has generated a perpendicular to each other, shifting electrical and magnetic fields that travel away from the source.
  • Electromagnetic (EM) waves shift electrical and magnetic fields, conveying energy and momentum across space.

According to this question, other options are incorrect.

Oksanka [162]3 years ago
4 0

A) always equal to a right angle

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Explanation:

The complete question is

A merry-go-round spins freely when Diego moves quickly to the center along a radius of the  merry-go-round. As he does this, It is true to say that

A) the moment of inertia of the system decreases and the angular speed increases.

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and r is the radius of the rotating body from its center.

We can see from equation 2 that decreasing the radius of rotation of the body will decrease the moment of inertia of the body.

From equation 1, we see that in order for the angular momentum to be conserved, the decrease from I_{1} to I_{2} will cause the angular speed of the system to increase from w_{1} to w_{2} .

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