Our Hands Become Warm When We Rub Them Against Each Other. Why?

Our hands become warm when we rub them against each other. Why?

One Line Answer

When we rub our hands, mechanical energy is converted into heat energy.

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Chapter 1: Force, Work, Energy and Power - Exercise 1.5 ii [Page 54]

Chapter 1 Force, Work, Energy and Power
Exercise 1.5 ii | Q 24 | Page 54

State two disadvantages of producing electricity from solar energy.

How much electric power is generated in India using the wing energy?

State two advantages of using nuclear energy for producing electricity.

State the energy transformation on the following:

Electricity is obtained from nuclear energy.

What do you understand by the kinetic energy of the body?

What kind of energy is possessed in a situation when?

A shooting arrow.

Give two examples each of renewable and non-renewable sources of energy?

For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?

Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?

You do not have rangoli powder. What things can you use as an alternative?