12. The mass of the cargo and the skin of a hot air balloon is 200 kg. The baloon is floating above the ground. The hot air inside it has a density of 1.20 kg/m'. The density of the cold air is 1.30 5g/m'. What is the buoyant fome acting on the balloon? 2.55 x 101 N b) 2000 N 1.5 x 10* N Pc Vo - P.Vg - mag -o d) 3200 N Pc V - PAV- me 2.0 x 10' N my = PAV mug V