Question

Let's think about the difference between gauge and absolute pressure. Have you ever experienced the explosive opening of a swelled up yogurt container you just bought from the store? It likely was manufactured at a different elevation with a different absolute atmospheric pressure. What change happens to the gauge pressure inside after being shipped to a different elevation and why? Describe in detail one real-life example where this situation might come in to play. (You might think of an example like what happens to car tires after changing elevation.)

Answer 1

Ans: Gauge Pressure is defined as the diffeence between the absolute pressure and atmospheric pressure.

Gauge Pressure = Absolute Pressure ~ Atmospheric Pressure

When openin a yogurt container we experience a small explosive it is because although the absolute pressure of can is same but atomspheric pressures at different elevations will be different which gives different gauge pressures.

The same situation can be experience in daily life experiences in the case of tyres of a vehicle. The absolute pressure in tyres will be same at different elevations but when travel to different elevations the atmospheric pressure will be change which gives different gauge pressures.