2007-09-07 09:18:52 · 4 answers · asked by Wanda S 4 in Science & Mathematics ➔ Physics
Assuming the can is open, the pressures are equal.
2007-09-07 09:26:26 · answer #1 · answered by nyphdinmd 7 · 0⤊ 0⤋
soda cans are pretty flimsy when it comes to outside pressure, so if it was sealed shut and the pressure inside was reduced, the can would crush down until the pressure was nearly equal again.
If the can was actually empty, meaning not even AIR or anything else but a vacuum was inside, the external air pressure of 15 pounds per square inch would smash it almost flat, until the pressure resistant shape of the bottom and top edges stopped it. At some point in that crushing process, the thin metal skin of the can would almost certainly be punctured, and the pressure would equalize.
2007-09-07 16:40:26 · answer #2 · answered by Anonymous · 0⤊ 0⤋
They are the same. If they weren't it would either be crushed or bowed out.
2007-09-07 16:29:20 · answer #3 · answered by ItsMeTrev 4 · 0⤊ 0⤋
Um, yeah if its open it is the same.
2007-09-07 16:27:44 · answer #4 · answered by Rob K 1 · 0⤊ 0⤋