As I use sandpaper on some rusty metal,the sandpaper gets hot because:
A)heat is flowing from the sandpaper into the metal.
B)heat is flowing from the metal into the sandpaper.
C)frictional processes increase the internal energy of the sandpaper.
D)heat is flowing from my hand into the sandpaper.

Question

Quizplus · Accepted Answer

When the sandpaper rubs against the rusty metal, friction occurs which increases the internal energy of the sandpaper. This increase in internal energy causes the sandpaper to become hot. Therefore, option C is the correct choice. Heat is not flowing from the sandpaper into the metal or vice versa, and there is no mention of the involvement of hands in the given scenario.

As I Use Sandpaper on Some Rusty Metal,the Sandpaper Gets