Предмет: Алгебра, автор: superrisachi

ПОМОГИТЕ С АЛГЕБРОЙ ПОЖАЛУЙСТА! СРОЧНО

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Автор ответа: filuksistersp735lh
1

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решение на фото..........

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superrisachi: спасибо!!! можете пожалуйста ещё с другим помочь
https://znanija.com/task/41323676
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Faraday knew from his long study of electricity that magnetism should be able to produce a current, as well as vice versa. In spite of his various failures, the idea of producing a current directly by magnetic action remained firm in his thoughts. One of his friends said later how at this period of his long life Faraday used to carry about with him in his pocket a small rough model of electro-magnetic apparatus. This consisted simply of an inch-long straight iron rod, or core, with some turns of copper wire wound round it.
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