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An jet is flying at a speed of 500m/s with respect to the ground. Sound wave 1 is approaching the plane from the front, while

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An jet is flying at a speed of 500m/s with respect to the ground. Sound wave 1 is approaching the plane from the front, while sound wave 2 is catching up from behind. Both wave travel at 340m/s relative to the ground. What is the velocity of each wave (1 & 2 respectively) relative to the plane

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