Why do you think psychology courses like this one are often requirements of so many different programs of study ?
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Ответ:
Because psychology helps you understand the mind of someone else. It can teach you about traits people may have based on what you see, or a likely personality of someone based on their history, and so many other things. Psychology helps you understand a whole other person, and understanding people is a big part in many things such as medicine, STEM, nursing, teaching, and many other things. Understanding people and the things around you is a necessary skill.
Ответ:
(a) the approximate mass of a column of air is: 1225 (Kg), (b) the weight of this amount of air is: 12017.25 (N) and (c) the pressure at the bottom is: 120172.5 (KPa)
Explanation:
We need to remember that the equation that related mass and volume is the density as:
, where p is the density, m is the mass and V is the volume and assuming that air density is 1.225 (Kg/m3) and knowing that exosphere is the upper atmosphere and its height is 10000 (Km). We now can get the volume as:
, so that the approximate mass of a column of air is: 
. Then the weight of this amount of air is:
, where W is the weight, m is the mass and g the gravity acceleration, so:
. Finally to find the pressure we know that gauge pressure equation 
where P is the pressure, p is the density of the column and h is the height of the column, so 
.