What do these two changes have in common? ice crystals forming on a window
an engine using gasoline to power a car
Select all that apply.
Both are caused by heating.
Both conserve mass.
Both are only physical changes.
Both are caused by cooling.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over