Question

How do you convert $2.8\,atm$ into psi?

Answer 1

Hint: The two units i.e. atm (atmospheric pressure) which is the standard unit and psi (pound per square inch) are related as $(x)\,atm = \,(x) \times 14.696$ so you just have to multiply any numeric value with $14.696$ and easily get your pressure term into psi. Here $x$ is your particular value to be converted.

Complete step by step answer:
Before going to the answer let’s understand firstly what atmospheric pressure is. We all know from our basic classes that pressure is that force which acts on a $1\,{m^2}$ of area. Now when we talk about the atmosphere where we breathe certain mixtures of gases. Here air pressure is the force exerted on a surface by the air above it as gravity pulls it to Earth. Generally the barometer name of the instrument is available by which atmospheric pressure can measure. After measuring pressure of air by barometer there are different units as there are in length measurement. I am taking an example of length measurement because it is basic and we all had learned it in our junior classes.

So for measuring length a meter scale is there, kilometre, centimetre and many more. These units can be converted into one another. Like $1\,km = 1000\,m$ and $1\,m = 100\,cm$ so just like this pressure has many units. There is atm (normal atmospheric pressure), torr, bar, pascal, psi etc. We can also convert these units of pressure into one another as we convert length of different scales.

The two units for measuring atmospheric pressure i.e. atm and psi are converted as $1\,atm = 14.696\,psi$ so for converting $2.8\,atm$ into psi, we have to multiply $2.8$ by $14.696\,$ that will change atm into psi.
$2.8\,atm = \,2.8 \times 14.696\,psi$
$ = \,41.1488\,psi$
We got the answer as $41.1488\,psi$

Note: There are many conversions like this always remember to write the converted unit at last. Psi is the smallest unit of pressure and it is rarely used in the United States. That’s why it is new to our ear. Normal atmospheric pressure is $14.7\,psi$ , it means that if we consider a column of air it will be of $1\,sq.\,inch$ and the length could be from earth surface to space. Then we can say that area will have this amount of pressure in psi.