Prior to touching the bar magnet, the magnetic domains in the nail were pointing in random directions. When Taylor touched the nail to the bar magnet the magnetic fields of the magnetic domains aligned and it became a temporary magnet.
b. 460.8 m/s
Explanation:
The relationship between the speed of the wave along the string, the length of the string and the frequency of the note is

where v is the speed of the wave, L is the length of the string and f is the frequency. Re-arranging the equation and substituting the data of the problem (L=0.90 m and f=256 Hz), we can find v:

c. 18,000 m
Explanation:
The relationship between speed of the wave, distance travelled and time taken is

where
v = 6,000 m/s is the speed of the wave
d = ? is the distance travelled
t = 3 s is the time taken
Re-arranging the formula and substituting the numbers into it, we find:

Yes it is because the teacher told me in science lol ☺☺
Answer:
The maximun distance is 
Explanation:
From the question we are told that
The wavelength are 

The distance of seperation of the two slit is 
The distance from the screen is 
Generally the distance of the bright fringe to the center of the screen is mathematically represented as

Where m is the order of the fringe
For the first wavelength we have



For the second wavelength we have


----(2)
From the question we are told that the two sides coincides with one another so



Hence for this equation to be solved

and 
Substituting this into the equation

Hence 