Explanation:
Given that,
Magnitude of vector A, |A| = 15
Magnitude of vector B, |B| = 25
We need to find the magnitude of this sum.
The maximum sum of the resultant vector,

The minimum sum of the resultant vector,

So, the magnitude of this sum either 45 or -10.
Answer:
The transmitted intensity through all polarizers is 
Explanation:
According to Malu's law the intensity of a polarized light having an initial intensity
is mathematically represented as

Now considering the polarizer(The polarizing disk) the equation above becomes

Where n is the number of polarizers
Substituting
for the initial intensity 3 for the n and 20° for the angle of rotation


I belive it could be 6.5 but I could be wrong
Answer:
A rocket taking off from earth which pushes gasses in one direction and the rocket in
the other