Question

why is heat produced when we rub our hand together?

Answer 1

Because by rubbing our hand the friction force is produced and this friction converts into the energy which takes the form of heat energy. And so the heat is produced...This is the reason.

Answer 2

When you rub your hands together, scratching the surface of your skin back and forth allows your skin molecules to move a little faster.

Explanation:

• If you rub your hands together for a few seconds, you will notice that your hands are feeling hot.
• This warmth is caused by a force called friction.
• When objects like your hands come in contact with each other and move against each other, they create friction.
• Friction occurs when you exceed the resistance to friction against an object.
• The frictional force opposes the motion.
• There is no resistance if you keep your hands together, so no friction is created.
• They rub and rub together.