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
Directly outside of the nucleus you have a membrane
Answer:
Option A
Explanation:
Acceleration will be obviously zero when Force = 0
<u><em>That is how</em></u>:
Force = Mass * Acceleration
So, If force = 0
0 = Mass * Acceleration.
Dividing both sides by Mass
Acceleration = 0/Mass
Acceleration = 0 m/s²
In an atom, you have three particles: protons, electrons, and neutrons.
When you add or subtract electrons from an atom, it means that there are either more protons than electrons (positively charged) or there are more electrons than protons (negatively charged).
You cannot add or subtract protons since they are the atomic number, which means the number of protons determines the element. Neutrons have a neutral charge, so they wouldn't affect the charge at all.