Question

What frequency will Johnny hear as a jet, whose engines emit sound at a frequency of 1550 Hz, flies toward her at a speed of 200.0 m/s? Use v_S = 343 m/s.

Use the correct units in your answer.

Answer 1

$$f=f_0\frac{v+v_0}{v-v_s}\\f=1550\frac{343+0}{343-200}=3718\ Hz$$