- #1
Tomy World
- 15
- 5
Thread moved from the technical forums to the schoolwork forums
TL;DR Summary: Which gas has a higher pressure and why? School has provided answer which I disagree. Like to hear comment from others.
Yah. It's quite straight forward, right?Baluncore said:Welcome to PF.
If the system is static, then gas A has the higher pressure as it pushes the mercury towards the other gas B.
What do you think?
When you think a teacher gets it wrong, if you want good marks, do NOT challenge the teacher in front of the class. Give a copy of your work to the teacher after the class. Either you or the teacher will be wrong, neither of you needs public embarrassment or loss of face.Tomy World said:And students hesitate to challenge teacher... I'd encourage them to openly discuss with teacher ;)
May be 'challenge' is a strong word. I don't mean that ;)Baluncore said:When you think a teacher gets it wrong, if you want good marks, do NOT challenge the teacher in front of the class. Give a copy of your work to the teacher after the class. Either you or the teacher will be wrong, neither of you needs public embarrassment or loss of face.
I agree. Any teacher who is offended by a POLITE challenge doesn't belong there.jbriggs444 said:With an error this egregious and a resolution that is relatively straightforward to work out, my inclination would be to challenge the teacher in class.
The pressure difference is the difference in pressure between two points in a fluid or gas. It is typically measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa).
Pressure difference is calculated by subtracting the pressure at one point from the pressure at another point. This can be done using a pressure gauge or by using mathematical equations, such as Bernoulli's equation.
Pressure difference is caused by a variety of factors, including changes in elevation, temperature, and velocity. It can also be created by external forces, such as air flow or compression.
Pressure difference is important in many scientific and engineering applications. It helps us understand fluid and gas behavior, such as in weather patterns and aerodynamics. It is also crucial in designing and maintaining systems that rely on pressure differentials, such as pipelines and ventilation systems.
Pressure difference can be measured using various instruments, such as manometers, pressure gauges, and barometers. These instruments typically rely on the displacement or deformation of a fluid or material to determine the pressure difference. Advanced techniques, such as laser interferometry, can also be used to measure pressure differences with high precision.