Question

When we rub our hands:​

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

Answer 1

The correct option is D mechanical energy changes into heat energy​

When we rub our hands together the mechanical energy due to the motion of our hands gets converted into heat energy. Hence option (B) is correct.​