Inspiration occurs when the is less than the . Inspiration occurs when the is less than the . intrapleural pressure; transpulmonary pressure intrapulmonary pressure; atmospheric pressure tidal volume; vital capacity thoracic cavity volume; lung volume

Alright, i'm gonna try to explain this as good as possible. the law of conservation is like a collection overtime. it never changes though. no matter how you change the constituent parts.

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on