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Dimas [21]
3 years ago
9

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

Physics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

True  there is the permanent magnet and the electromagnet.

You might be interested in
Two stars are 3.7 1011
dem82 [27]

Answer:

  L = 5.68 10¹⁷ m

Explanation:

The resolution of the telescope is given by diffraction

            a sin θ = m λ

Where a is the separation of the linear slits, λ  the wavelength, m an integer that determines the order of diffraction

In this case, suppose that the premieres meet Rayleigh's criteria, which establishes that the central maximum of the diffraction of an object coincides with the first minimum of diffraction of the second object. In this case m = 1

            sin θ = λ  / a

In the case of circular openings, polar coordinates must be used, so the equation is

            sin θ = 1.22 λ  / D

Where D is the diameter of the lens or tightness. Since the distances are very large and the small angles we can approximate the sine to the radian angle value

             θ = 1.22 λ  / D

Let's use trigonometry to find the angle. We have the separation of the premieres y = 3.7 10¹¹ m and

          tan θ = y / L

           θ = y / L

Let's replace

           y / L = 1.22 λ  / D

            L = y D / 1.22 λ  

calculate

            L = 3.7 10¹¹  1.03 / (1.22 550 10⁻⁹)

            L = 5.68 10¹⁷ m

8 0
3 years ago
The FIRST step in cloud formation is.... A) warmed air cools and condenses. B) solar energy causes warm air to rise. C) solar en
Elodia [21]

c because the fist step is condensing then rising up

3 0
3 years ago
Imagina que haces girar tu brazo extendido, ¿qué parte tendrá mayor velocidad angular, el codo o la mano?
Vitek1552 [10]

Answer:

the angular velocity is the same for both.

Explanation:

Angular velocity is defined by the change in angle between time

          w = Δθ /Δt

As the arm and elbow are on the same axis the two rotate the same angles, therefore the angular velocity is the same for both.

This does not happen with linear speed

          v = w r

therefore as the hand has a greater radius its greater linear speed

Traalate

La velocidad angular es definida por el cambio del angulo entre el tiempo

w= Δθ/ΔDt

como el brazo y el codo están en el mismo eje los dos girar los mismo ángulos, por lo tanto la velocidad angular es la misma para los dos.

Esto no pasa con la velocidad lineal

          v = w r

por lo tanto como la mano tiene un radio mayor su velocidad lineales mayor

8 0
3 years ago
A school bus moves slower and slower. Using what you have learned about forces, explain why the bus moves slower and slower.
Levart [38]

Answer:

I don't exactly know what you learned but it could be because of more friction or the bus was running out of gas.

4 0
3 years ago
Please need help on this
lara [203]

#6 - Lower frequencies correspond to <em>longer</em> wavelengths.

#7 - To change the pitch of a sound, you have to change its <em>frequency</em>.

6 0
4 years ago
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