When a contracting hot ball of gas spins into a disk shape, it cools faster due to (a) increased radiation transfer. (b) increased surface area. (c) decreased insulation. (d) increased convection...

When a contracting hot ball of gas spins into a disk shape, it cools faster due to

(a) increased radiation transfer.

(b) increased surface area.

(c) decreased insulation.

(d) increased convection currents.

(e) eddy currents.

Each second, the burning Sun’s mass

(a) increases.

(b) remains unchanged.

(c) decreases.