When you post a multiple-choice question, you're expected to
post the choices too.
If the "endocrine system" is on your list, I think it's the best choice
for an answer. If it'd not, then I can't help you, because you won't
let me see what's on the list.
As the distance between two charged objects increases, the strength of the electrical force between the objects <em>decreases</em>.
The answer is C. Mountains. I hope this helped!
Complete Question
A grating has 767 lines per centimetre.Find the angles of the first three principal maxima above the central fringe when this grating is illuminated with 672 nm light.
Answer:
The first is
The second is
The third is
Explanation:
From the question we are told that
The number of lines per cm is
The wavelength is
Generally the condition for constructive interference is
Here d is the distance of separation of the slit which is mathematically represented as
So
For the first angle n = 1
So
For the second angle n = 2
So
For the second angle n = 3
So