Answer:
Explanation:
Wave produced in string and waves produced in air are different . The only similarity is that their frequency are equal . Otherwise , no similarity . One is transverse ( on wire ) , the other is longitudinal ( air ) . Their velocities too are different .
velocity = wavelength x frequency
if frequency is constant
wavelength ∝ velocity
wavelength is proportional to velocity . Since their velocities are different , their wavelength too will be different.
The answer is surface waves
Answer:
a
The total distance traveled is 
b
The average velocity is 
Explanation:
From the question we are told that
The time taken for first part 
The speed for the first part is 
The time taken for second part is 
The speed for the second part is 
The time taken for third part is
The speed for the third part is 
Generally

Therefore the total distance traveled is

substituting values


Generally the average velocity is mathematically represented as

Where
is the total time taken which is mathematically represented as


The average velocity is


Answer:(1)=current (2)=force (3)=magnetic field (4)=reverse
Explanation:When there's a current in The coil. A force act on each side Of The coil. This is because the coil is in a magnetic field, the direction Of The spin would reverse