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algol [13]
4 years ago
8

The animation shows the circuit inside a speaker. The speaker cone vibrates as the current changes direction. This creates sound

waves. Explain how the electromagnet causes movement back and forth as the electric current changes.
Engineering
1 answer:
I am Lyosha [343]4 years ago
5 0

Answer:

The direction of the magnetic field around the coil reverses. The force on the cone now pulls it back in. Repeatedly alternating the current direction makes the cone vibrate in and out. The cone vibrations cause pressure variations in the air, which are sound waves.

Explanation:So as it goes back and forth it makes a sound from the vibration.

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Answer:

B. Acid rain.

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Explanation:

Oxides of nitrogen contribute to the formation of photochemical smog and acid rain. Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere while on the other hand, when nitrogen oxide react with the water vapor in the atmosphere forming nitric acid which falls on the earth surface with the help of precipitation.

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Is annealed polycrystalline copper a material that work hardens significantly or a material that exhibits a low work-hardening r
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Those that harden under strain, such as the aluminum-magnesium alloys used in beverage cans and the copper-zinc alloy, brass, used for cartridges, which show more strain hardening than pure copper or aluminum, respectively.

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brainly.com/question/15058191

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6 0
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extrusive,

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