Which action best demonstrates the transformation of mechanical energy to heat energy?
a. digesting a meal
b. burning a candle
c. rubbing hands vigorously
d. melting a piece of ice in sunlight

wouldn't it be C because mechanical your moving your hands and then heat energy because of friction.

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

it would be a gas formation