Answer:
1. telescope
2.

f- focal length
f- focal length r- the radius of curvature of the mirror

p-the distance of the object from the vertex of the mirror
l-the distance of the figure from the vertex of the mirror
32 kg m/s would be the kinetic energy.
Different layers represent clouds made of gases that condense at different temperatures.
If its just a number 2,300 is an answer