Think and discuss: Why do you think the rate of temperature change does not stay constant over time? If possible, discuss your answer with your teacher and classmates.

Because the temperature of the place its contained in is constantly changing, for example, if you put a room temperature item in the fridge it will become cold, or whatever the temperature you set your fridge to.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.