Athermometer reading 18 f is brought into a room, the temperature of which is 70 f. one minute later the reading is 31 f. determine the temperature reading as a function of time. find the temperatire reading 5 minutes after the thermometer is first brought into the room

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?