40. Two electric train moving towards each other at spe

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40. Two electric train moving towards each other at speeds υ1 = 20 m / s and υ2 = 10 m / s. The first train whistles, the pitch of which corresponds to the frequency ν0 = 600 Hz. Determine the frequency perceived by the passenger train before the second meeting of trains and after their meeting. The speed of sound take equal υ = 332 m / s.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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