When a stone is thrown in the calm water of a pond the waves produced on the surface of water in the pond are

A raised hammer possesses:

What is the orbital velocity of the geostationary satellite?

Which scientist first melted two pieces of ice by rubbing them together?

The width of a mirror is called the mirror?

The process of transferring of charge from a charged object to the earth is called ______________.

The separation of cream from milk by churning is due to 

Household appliances based on thermal effect of electric current is-