It’s used in measuring distance from earth with other celestial object. Hope this helps mark brainest
Answer:<span>Humid air is lighter, so it has lower pressure.
The reason is the molecules of water are H2O, whose molar mass is 18 g/mol.
These molecules displaces molecules of N2 and O2, whose molar masses are:
N2: 2*14g/mol = 28 g/mol, and
O2: 2*16g/mol = 32 g/mol.
Then molecules of 28g/mol and 32 g/mol are being replaced with molecules of 18g/mol, leading to a lower weight of the same volume of air, which results in lower pressure.
</span>
The distance from the image to the mirror is C) 2.5 cm
Explanation:
A mirror is an object that reflects the light coming from an object, creating an image of the object itself.
We can solve this problem by using the mirror equation, which states that:

where:
f is the focal length of the mirror
p is the distance between the object and the mirror
q is the distance between the image and the mirror
For the situation in this problem, we have:
f = 2.0 cm is the focal length of the mirror
p = 10.0 cm is the distance of the object from the mirror
Solving for q, we find:

Learn more about reflection and other wave phenomena:
brainly.com/question/3183125
brainly.com/question/12370040
#LearnwithBrainly