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.
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
The force responsible for normal expiration is passive recoil of the lungs and chest wall. As the diaphragm and external intercostal muscles relax, the elastic recoil of these structures causes the lungs to decrease in volume, leading to expiration.
During normal expiration, the primary force responsible is the relaxation of the diaphragm and external intercostal muscles, leading to a decrease in thoracic volume. This increase in pressure within the lungs causes air to be pushed out. Additionally, elastic recoil of the lungs and chest wall helps to facilitate expiration by returning them to their resting position after inhalation.
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.
The friction force vs normal force graph shows that there is a direct relationship between the friction force and the normal force. As the normal force increases, the friction force also increases. This indicates that the friction force is proportional to the normal force.
The friction vs normal force graph shows that there is a direct relationship between friction and the normal force. As the normal force increases, the friction force also increases. This indicates that the friction force is dependent on the normal force acting on an object.
The support force on an object is called the normal force because it is perpendicular (normal) to the surface on which the object rests. It acts in the opposite direction to the force of gravity to keep the object in equilibrium.
The normal force at the top of a loop in a roller coaster is responsible for providing the necessary centripetal force to keep the riders moving in a circular path without falling off the track. It acts perpendicular to the surface of the track to counteract the force of gravity and ensure the riders stay safely in their seats.