Physics, 09.11.2021 22:50 jayjayanyway04
trên mặt nước, hai nguồn kết hợp A, B cách nhau 40 cm luôn dao động cùng pha, có bước sóng 6 cm. Hai điểm Cd nằm trên mặt nước mà ABCD là một bình chủ nhật
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trên mặt nước, hai nguồn kết hợp A, B cách nhau 40 cm luôn dao động cùng pha, có bước sóng 6 cm. Hai...
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