Someone help me with my engineering homework?

Question

this the question i have:

consider the low-speed flight of an aircraft as it is nearing a landing. If the air pressure and temperature at the nose are 1.3 atm and 310k, respectively, what are the density and specific volume?

please explain everything in a clear way so i can understand how to do it

Answer 1

Ok, what you have to do is to use the equation for ideal gases. You know,

PV = mRT

where P is pressure, V is volume, m is mass, R is the constant of the gas, in this case air and T is temperature. You already know P, R and T, so you solve for m/V

m/v = P/(RT)

you know that density will be m/v and there you have what you were looking for.

now with the specific volume just divide 1/density and you have it.

HOpe this helps.