Is Indoor Pressure the Same as Outdoor Pressure?

AI Thread Summary
Indoor pressure is generally similar to outdoor pressure, but there can be slight differences due to factors like ventilation and air-tightness of the building. In an air-tight room, the pressure can vary significantly from the outside, especially if air is removed or added. If indoor pressure is lower than outdoor pressure, it can lead to structural issues or air movement into the building. Conversely, higher indoor pressure can cause air to escape, affecting energy efficiency. Understanding these dynamics is crucial for building design and environmental control.
vettel1993
Messages
1
Reaction score
0
1. Is the pressure inside a building equal to the outside? Is there a very tiny difference?
What about air-tight room?


Homework Equations

The Attempt at a Solution

 
Physics news on Phys.org
If the pressure was different, what do you think would happen? Have you tried crushing a juice pack by sucking some air out?
 
It would depend on how "open" the building was.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top