Answer: False I think that is worded weird tho
Answer:
If the light were incident upon two polarizers at right angles, no light would get thru - thus each polarizer must block 50% of the light.
One polarizer would allow 50% of the light to pass.
Please READ Newton's first law of motion, and you'll see how nicely it explains that fact.
Answer:
We have many uses for infrared: night-vision cameras, remote controls, infrared astronomy, and fiber-optic cables. The greenhouse effect is even related to infrared waves because greenhouse gases absorb the infrared emitted by the ground, trapping it on the Earth.
Explanation:
online is hard toooooooooo