Question

Give reason for the following:
(a) School bells are made up of metals.
(b) Electric wires are made up of copper.
Answer.​

Answer 1

(ɑ) It is becɑuse metɑls ɑre sonorous, i.e. they produce sound when stuck with ɑ hɑrd substɑnce.

(b) It is becɑuse copper is good conductor of electricity.

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Answer 2

Answer:

1) Bells made up of metals and not from wood because metals have the capability to produce sound when hit with a solid object, i.e, they are Sonorous. Therefore, students will be able;e to hear the sound loud when bell hits.

2) Why is copper used for most electrical wiring? ... The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals.

Explanation:

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