The average intensity of light emerging from a polarizing sheet is 0.764 W/m^2, and the average intensity of the horizontally polarized light incident on the sheet is 0.883 W/m^2. Determine the angle that the transmission axis of the polarizing sheet makes with the horizontal.

The angle that the transmission axis of the polarizing sheet makes with the horizontal is 21.55⁰

Explanation:

Given;

average intensity of incident light, I = 0.764 W/m²

average intensity of transmitted light, I₀ = 0.883 W/m²

I = I₀Cos²θ

where;

θ is the angle that the transmission axis of the polarizing sheet makes with the horizontal.

Cos²θ = I / I₀

Cos²θ = 0.764/0.883

Cos²θ = 0.8652

Cosθ = √0.8652

Cosθ = 0.9301

θ = Cos⁻¹ 0.9301

θ = 21.55⁰

Therefore, the angle that the transmission axis of the polarizing sheet makes with the horizontal is 21.55⁰

representative si the final answer! : )

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.