The answer is D. When you melt something, it only changes its physical change.
I think the answer is 3, population.
This is false. they flow west to east
The total kinetic energy of the system is 2.5J
You don't say what the insulators are insulating from ... heat or electricity.
Here are some of each:
Heat insulators:
-- Air (between the inner and outer bottles of a thermos bottle)
-- Wood (around the handle of a frying pan)
-- Cloth (an oven mitt)
Electrical insulators:
-- rubber
-- plastic
-- wood
-- cloth
-- air
