Answer:
5.15348 Beats/s
4.55 mm
Explanation:
= Velocity of sound = 342 m/s
= Velocity of sound = 346 m/s
= First frequency = 440 Hz
Frequency is given by

Beat frequency is given by

Beat frequency is 5.15348 Hz
Wavelength is given by

Relation between length of the flute and wavelength is

At v = 346 m/s


Difference in length is

It extends to 4.55 mm
Postive and negatives attract, positive and positive repel. answer is negatively charged pipe.
sound waves and light energy are not "affected" by static electricity
It depends if the student can concentrate on his work while listening to music
In other cases it can also help improving grades by avoiding distractions
1) Magnitude
Let's take south as positive y-direction and east as positive x-direction. Then we have to resolve both displacements into their respective components:




So, the components of the total displacement are
east (so, 1.26 km west)
south
So, the magnitude of the resultant displacement is

2) Direction
the direction of the hiker's displacement is
south of west.