Calculate the mass of air in a room 5 m by 4 m by 3 m the density of air is 1.3 kg/m3

Explanation:

density (d) = 1.3 kg/m³

volume of the room (v)

= 5 m * 4m * 3 m

= 60 m³

mass(m) =?

now we know density is defined as mass per unit volume so

d = m / v

1.3 = m / 60

m = 78 kg

d is the answer i came up with

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.