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ivanzaharov [21]
3 years ago
11

What metal is used to make hard magnets?

Physics
1 answer:
Lelu [443]3 years ago
3 0

The most common metals used for permanent magnets are iron, nickel, cobalt and some alloys of rare earth metals

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Below is the attachment of the solutions.

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What role does voltage play in the formation or use of an electromagnet?
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un conductor de plata (p=1,6x10°-6ohm x m) tiene una seccion de 5x10°-6 m°2 y una longitud de 110 m . calcular la resistencia
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Responder:

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Explicación:

Dado:

La resistencia específica del conductor es,

La longitud del conductor es,

El área de la sección transversal del conductor es,

Sabemos que la resistencia de un conductor es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.

Por lo tanto, la resistencia se puede expresar como:

R=\frac{\rho\times l}{A}

Ahora, conecte los valores dados y resuelva para 'R'. Esto da,

R=\frac{1.6\times 10^{-6}\ ohm\cdot m\times 110\ m}{5\times 10^{-6}\ m^2}\\\\R=35.2\ ohm

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Answer:

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Explanation:

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