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mylen [45]
3 years ago
14

Explain how do batteries work?

Physics
1 answer:
Natali [406]3 years ago
4 0
This path is called a circuit. Batteries<span> have three parts, an anode (-), a cathode (+), and the electrolyte. ... The chemical reactions in the </span>battery<span> causes a build up of electrons at the anode. This results in an electrical difference between the anode and the cathode.</span>
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QUESTION 1
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A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If the sound intensity is origin
Temka [501]

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The new intensity = 3.38 × 10⁻⁵ W/m²

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Intensity of sound wave:

The intensity of sound  is the rate of flow of flow of energy, per unit area, perpendicular to the direction of the sound wave.

Intensity (I) ∝ A²

where I = intensity, A = Amplitude.

∴ I₁/I₂ = A₁²/A²₂............................... equation 1

From the question, the amplitude increase by 30% of the initial

∴ A₂ = A₁ + 0.3A₁ = 1.3A₁, I₁ = 2.00×10⁻⁵ W/m²

∴ (2.00×10⁻⁵)/I₂ = A₁²/(1.3A₁)²

(2.00×10⁻⁵)/I₂ = 1/1.3²

 making I₂ the subject of the equation

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The new intensity = 3.38 × 10⁻⁵ W/m²

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