Answer:
The phase difference is
Explanation:
From the question we are told that
The distance between the loudspeakers is
The distance of the listener from the wall
The frequency of the loudspeakers is
The velocity of sound is
The path difference of the sound wave that is getting to the listener is mathematically represented as
Substituting values
The phase difference is mathematically represented as
=
Where is the wavelength which is mathematically represented as
substituting value
Substituting value into the equation for phase difference
=
Answer:
B
Explanation:
Newton's first law of motion states that a body will remain in its state of rest or if its in motion will continue to move in a straight line, unless its acted upon by an external force.The ability of an object to stay at rest or in motion if its in motion is known as inertia.
Hence the correct option is B.
Dark moths because they use their color to blend in with the trees to hide from birds
The change in pitch of a train's horn as it passes while you are
standing still can be described by the Doppler effect, but that
doesn't explain it.