Why wouldn't something be crushed under a pressure of the atmosphere?
2006-11-04 06:59:18 · 4 answers · asked by Trevor M 1 in Science & Mathematics ➔ Physics
say you have a 22500lbs pushing down on something, 1.0m^2, why wouldn't it be crushed?
2006-11-04 08:45:00 · update #1
Hi. If you took a large can that could be sealed with a cap and put a small amount of water it, then heated the water until it boiled and was steaming from the top, then sealed the cap, the steam would condense. This would allow the outside pressure on the can due to the atmosphere to crush the can right before your eyes.
2006-11-04 07:16:21 · answer #1 · answered by Cirric 7 · 0⤊ 0⤋
The effect of crushing is a result of diff pressures of both sides of a surface.
So anything can be crushed under pressure of the atmosphere, as long as you can alter the pressure on the other side of the surface.
For example, drop some liquid nitrogen into a sealed can. The air inside (which exerts pressure = atmospheric pressure initially) condenses and pressure decreases inside. As such, the can is crushed inwards.
Humans don't get crushed because SOMEHOW/ COINCIDENTALLY the pressure inside humans is approx. = to the atmospheric pressure.
Does that answer your question?
2006-11-04 07:57:10 · answer #2 · answered by luv_phy 3 · 0⤊ 0⤋
Leakage of furnace gases is the obstacle. And if this would nicely be a coal boiler, the nice and snug ash additionally will leak out, getting everywhere. this would degrade the furnace casing and via the years and would reason openings interior the casing sufficient to ignite surrounding wires and gasoline, burning up that portion of the boiler. I labored on some boilers at one time that have been designed to have effective tension interior the furnace, this replaced into to keep the cost of putting in and working precipitated draft followers. each and all the failings I defined above got here approximately, inflicting injury and outages. those boilers have considering been switched over to balanced draft by utilising including interior the precipitated draft followers, and the furnace pressures at the instant are only under atmospheric.
2016-12-17 04:14:36 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Because our internal pressure, or the internal pressure of anything that is not crushed by atmospheric pressure, is in equilibrium with atmospheric pressure, which is about 101.4 kPa......
2006-11-04 07:03:28 · answer #4 · answered by benjamin_sanborn 1 · 0⤊ 0⤋