What season does the sourtther hempishere experience when it is away from the sun?

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

i think its 100

i hope this !