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> 如图表示产生机械波的波源P做匀速运动的情况，图中圆表示波峰，已知波源的频率为f 0，该图表示波源正在向（填“A”、“B”、“C”或“D”）点移动；观察者在图中A点接收波的频率将（填 “大于”“等于”或“小于”）f 0 。

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发布时间：2024-09-07

如图表示产生机械波的波源P做匀速运动的情况，图中圆表示波峰，已知波源的频率为f ₀，该图表示波源正在向（填“A”、“B”、“C”或“D”）点移动；观察者在图中A点接收波的频率将（填 “大于”“等于”或“小于”）f ₀ _。

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