K. The speed, v (m/s), of hot air coming out of the rocket engine is given by: 6.3d v2 = KA tanh(- Where K is a constant and equals 36, d is the distance from the middle of the air stream in meteres, and 2 is the wavelength in meters. Evaluate the speed v if d = 3.5 m and 2 =30 m.

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