Question 1
A force acting over a large area will exert less pressure per square inch than the same force acting over a smaller area.
Question 2
All principles of force apply to pressure.
Ask unlimited questions for free
The familiar sounds of your heart are made by the heart's valves as they open and close.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
There are 20 feet of blood vessels in each square inch of human skin.
Medication errors are three times higher among children and infants than with adults.
For a complete list of videos, visit our video library