Airplane cabins are pressurized so passengers can breathe comfortably at altitudes of up to 9,200 meters (30,000 feet).The air pressure inside the cabin at this altitude, however, is still lower than the atmospheric pressure at sea level. A passenger opens a resealable bag of raisins before the plane takes off from approximately sea level. He reseals the bag and leaves some air surrounding the raisins. What will the bag most likely look like when the plane is at its highest altitude?
B
It will not have changed.The bag is sealed at about sea-level pressure, so the air inside it starts at a higher pressure than the cabin air at the plane’s highest altitude. The higher-pressure air pushes outward on the flexible bag, causing it to expand until the pressures become closer to balanced. Therefore, it will have expanded.
AI-written and checked against the verified answer.