The given question is incomplete. The complete question is as follows.
The irregularly shaped area of charge in the figure has surface charge density ηi. Each dimension (x and y) of the area is reduced by a factor of 3.68.
What is the ratio ηf/ηi where ηf is the final surface charge density? I found this value to be 13.5 and it is correct
An electron is very far from the area. What is the ratioFf/Fi of the electric force on the electronafter the area is reduced to the force before the area wasreduced? I found this to also be 13.5, but it is wrong.
Explanation:
Let us consider that expression for area will be as follows.
Area () =
As,
= 13.5
Also, = 1
As the electron is very far from the area. Hence, it can be considered as a point charge. Whereas charge is also constant as the force is not changing.
That the radio wave has more to it
It would never stop bouncing.
Answer:
rad/s
Explanation:
The wave function is:
where :
k = wave number
x = position of a point on the wave
= angular frequency
t = time
What is another way to express the angular frequency (omega)
Angular frequency (omega) can be express as :
rad/s ( i.e one repetition that it takes to repeats itself)