Question

When we rub our hands

• A. kinetic energy changes into potential energy
• B. mechanical energy changes into heat energy
• C. potential energy changes into kinetic energy
• D. heat energy changes into mechanical energy.

Answer 1

Answer: (B)

mechanical energy changes into heat energy

When you rub your hands together thats mechanical energy. Once you hands warm up its heat energy. itsheat energy due to the motion between the hands is changed to heat.