Answer:
phase difference = 3.21 rad
Explanation:
given data
wall apart = 2.21 m
directly in front = 3.21 m
frequency f = 254 Hz
speed of the sound v = 343 m/s
solution
we get here first wavelength of sound wave that is
wavelength = 343 ÷ 254
wavelength = 1.35 m
so
path difference is
path difference =
path difference = 0.687
path difference = 0.69 m
and
phase difference will be
phase difference =
............1
phase difference =
phase difference = 3.21 rad
<h2>
Answer: A. 3.9 m</h2>
Explanation:
The variation in distance is given by:
(1)
Where is the final distance of the cat from the door and is the initial distance of the cat from the door.
Solving (1) with the known values:
(2)
Hence:
Answer:
D
Explanation:
Cause im smart smart and the atom is very simple just use google lol