Question

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Temperature of air 30°C
15 m
A person
Reflector
A person starts running with velocity 20 ms' away from the
reflector after producing a sound of wavelength 20 cm.
(a) What is simple harmonic motion?

(b) Write the difference between different types of wave.
(c) Establish the relationv = fa.

(d) Does the person 'A' hear the echo? Give your argument with
mathematical explanation.
I am a new student please help me friends ​

Answer 1

Answer:

(d)Does the person 'A'hear the echo ? Give your argument with mathematical explanation. I am a new student please help me friend

Step-by-step explanation:

i ? dk