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DedPeter [7]
3 years ago
13

27. Describe how batteries provide electrical charges (or convert energy). (SSP5b)

Physics
1 answer:
pav-90 [236]3 years ago
3 0

Answer:

A battery is a device that stores chemical energy and converts it to electrical energy.

Explanation:

The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work

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Tenemos un Cable de cobre de 1 km de longitud cuya sección es de 2 milímetros al cuadrado y queremos saber la resistencia que se
Nady [450]

Answer:

8.5 Ω

Explanation:

La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.

La fórmula de la resistencia (R) viene dada por:

R = ρL/A

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Sustituyendo da:

R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶

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Where does the energy in an unburned match come from?
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