To solve this problem it is necessary to apply the concepts related to the law of Malus which describe the intensity of light passing through a polarizer. Mathematically this law can be described as:
Where,
Indicates the intensity of the light before passing through the polarizer
I = Resulting intensity
= Indicates the angle between the axis of the analyzer and the polarization axis of the incident light
From the law of Malus when the light passes at a vertical angle through the first polarizer its intensity is reduced by half therefore
In the case of the second polarizer the angle is directly 60 degrees therefore
In the case of the third polarizer, the angle is reflected on the perpendicular, therefore, its angle of index would be
Then,
Then the intensity at the end of the polarized lenses will be equivalent to 0.09375 of the initial intensity.
The correct answer is:
That the land where it specifically was has been moving and that years ago that place was under water.
Explanation:
Kansas has been the cause of some of the most luxurious fossil findings in US history. The fossil record of Kansas spans from the Cambrian to the Pleistocene. From the Cambrian to the Devonian, Kansas was coated by a shallow sea.
Answer is b vector hope I helped
Answer:
Speed of the cart at the top of the loop = 34.3 m/s
Explanation:
Gravitational acceleration = g = 9.81 m/s2
Your mass = m
You feel three times as heavy at the top of the loop.
Normal force on you = N = 3mg
Radius of the loop = R
Speed of the cart = V
Centripetal force required for the circular motion = Fc
F = m
The centripetal force is provided by the normal force on you which is directed downwards and your own weight which is directed downwards.
Fc = mg + N
Fc = mg + 3mg
Fc = 4mg
m12 -= 4mg R
V = 4gR
V = 4(9.81)(30)
V = 34.3 m/s
Speed of the cart at the top of the loop = 34.3 m/s
