Will heat flow faster when there’s a large change in temperature or a small change in temperature?

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

What are atoms of the same element with varying number of neutrons

What is a possible result of higher air temperature caused by global warming