Light that passes through a series of three polarizing filters emerges from the third filter horizontally polarized with an intensity of 280 w/m2. 1) if the polarization angle between the filters increases by 25∘ from one filter to the next, find the intensity of the incident beam of light, assuming it is initially unpolarized. (express your answer to two significant figures.

8.3×10² W/m²

Explanation:

I₀ = Intensity of unpolarized light

θ = angle between the filters = 25°

I = Intensity of the polarized light after passing through three filters = 280 W/m²

∴ Intensity of unpolarized light is 8.3×10² W/m²

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19