Does potential energy increase, kinetic energy decrease when a book is placed on a shelf

What object a collides with object b and bounces back its final momentum is?

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places

There are 3 ways heat can be transferred: through solids, called , through liquids and gases , called , and through electromagnetic waves, called