36 m3/s of air enters a combustion chamber of a jet engine at a velocity of 180 m/s at -55 °C and 40 kPa. The air leaves the chamber at 1,036 m/s at 274 °C. Determine the fuel (in kg) consumed during a 30 minute flight. Assume that changes in air mass flow rate through the chamber are not significant and LaTeX: \Delta h\cong C_P\Delta T. Take the air gas constant to be 0.287 kPa. m3/kg. K , the specific heat of air to be 1 kJ/(kgK) and the heating value of the fuel to be 50,963 kJ/kg.

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

it has to be b, about 97 percent.