Models show how the atoms in a compound are connected.
Answer:
Order of maximum transmission of the polarizer is A, C and B.
Solution:
As per the question:
For the first polarizer, the angle is quite insignificant:
(A)
:
The light intensity after passing through the first polarizer is
and this intensity does not depend on the angle of the polarizer.
Consider
with the vertical, the intensity is given by:

(B)
:
Suppose the second polarizer is
with the vertical.
Now, intensity through the second polarizer:


Now, if we consider the second polarizer to be
,

(C)
:
Now,
Intensity through the third polarizer, if it is
with the vertical:


Answer:
T = 60 s
Explanation:
There are 6 poles on the track which are equally spaced
so the angular separation between the poles is given as


so the angular speed of the train is given as


now we have time period of the train given as



Answer:
Momentum of 2nd ball is

direction is given as

Explanation:
As we know that there is no external force on the system of balls so momentum before and after collision will be conserved
So we have

now after collision momentum of two balls is must be same as initial
so we have


so we have


for other component we have


Momentum of 2nd ball is given as


direction is given as



I see the light moving exactly at speed equal to c.
In fact, the second postulate of special relativity states that:
"The speed of light in free space has the same value c<span> in all inertial frames of reference."
</span>
The problem says that I am moving at speed 2/3 c, so my motion is a uniform motion (constant speed). This means I am in an inertial frame of reference, so the speed of light in this frame must be equal to c.