꧁❀aaaaa❀꧂Giải vth khtn 7 chương VI từ

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꧂Giải vth khtn 7, soạn vở thực hành khoa học tự nhiên 7 KNTT | Chương VI. Từ

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4.9 trên 7 phiếu

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Bài 18. Nam châm
Đưa nam châm thẳng và nam châm hình chữ U lại gần các vật sắt, thép, đồng, nhôm, gỗ (Hình 18.2 SGK KHTN 7). ಞ Xem chi tiết
Bài 19. Từ trường
Có thể phát hiện sự tồn tại của từ trường bằng cách nào? 🃏 Xem chi tiết

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Bài 20. Chế tạo nam châm điện đơn giản
Làm cách nào để biết ống dây đã trở thành nam châm điện? 𒅌 Xem chi tiết

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Bài 18. Nam châm

Bài 19. Từ trường

Bài 20. Chế tạo nam châm điện đơn giản