A single polarizer will stop 50% of the incoming light.
C aluminum because it has iron.
Answer:
His walks cover 2km+2km+2km = 6 km.
Explanation:
Let East be positive. Since West is the opposite direction, it is negative. His displacement is dependent on direction. 2km east + 2km west + 2km east = (2-2+2)km = 2km. His displacement is 0 because he ends up back where he started.
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Answer:
nucleus is the center of atom
The force applied to raise the block would be 250N