Why Does Water Seek Its Own Level
Capillary Action Occurs Because Water Is Sticky, Thanks to the Forces of Cohesion (Water Molecules Like to Stay Close Together) and Adhesion (Water Molecules...
What happens to the water in the cup?
Energy is transferred from the water vapor to the cup, which cools the water vapor. When the water vapor cools enough, the attractions between the molecules bring them together. This causes the water vapor to change state and become tiny drops of liquid water.
What is fluid at rest?
A fluid at rest is anyway only a clearly defined concept, if it is a liquid substance confined in a closed container at rest, situated on the fixed part of the earth’s surface, e.g. a reservoir or closed water vessel. Otherwise, fluid is in motion, or is capable of being set in motion by the slightest disturbance.