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Answer 1

Answer:

In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. ... One can also speak of motion of images, shapes, and boundaries.

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Answer 2

Answer:

Red phosphorus also has groups of 4 atoms , but they are not rings . One side is open , which allows each P4 group to chemically bond to a neighboring group , so that a huge amorphous network is formed instead of individual molecules . This is a relatively stable arrangement which makes the red phosphorus less reactive.

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