Nothing.
The relaxed state of the chest is fully exhaled. Breathing out, expiring, is normally accomplished by relaxing the diaphragm and the muscles of the ribs. No force is used.
It is possible to exhale forcefully, but the question did not ask that.
The force responsible for normal expiration is supplied by the elastic recoil of lung tissues and surface tension of the thoracic cage.
A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.
A surface pushing up, equal and opposite to a force pushing against it
localization
false
children under 18
Elastic recoil of lungs and thoracic wall
what force cause normal expiration
A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.A normal force is a force perpendicular to something - for example, to a surface. This force can be supplied by just about anything; in many cases by gravity.
which force are you talking about? Save
static of the surface
static of the surface
A surface pushing up, equal and opposite to a force pushing against it
The Horizontal Component of the normal force.
Centripetal Force.That force is, of course, supplied by gravitional force.
The support force on an object is called the normal force because it is a force "normal" to the object. "Normal" in this sense means perpendicular.
Work is equal to force x distance. It is equivalent to the energy supplied.
The force that is responsible for moving sediments in a river is the current.