Pressure Problem (1 Viewer)

[StudyOnly]

Hi, I can't seem to figure out the solution to this, the answer is B. Any help is appreciated. Thanks

 

[blyatman]

I'm not too sure which equations you learn or what subject this is for, but here it goes.

I'm assuming that no water is flowing out, so that the water in the dam is in hydrostatic equilibrium.

As a result, we can use the hydrostatic equation:

where is sea-level atmospheric pressure, is the density of water at STP, is the gravitational acceleration, and is the depth below the surface. If you plug these in, you get about 690 kPa.

 

[StudyOnly]

I'm not too sure which equations you learn or what subject this is for, but here it goes.

I'm assuming that no water is flowing out, so that the water in the dam is in hydrostatic equilibrium.

As a result, we can use the hydrostatic equation:

where is the atmospheric pressure, is the density of water, is the gravitational acceleration, and is the depth below the surface. If you plug these in, you get about 690 kPa.

Hi, thanks for the answer. I think you meant to say . I had been subbing thinking about PE for some reason. Thanks and btw this is for engineering studies.

 

[blyatman]

Hi, thanks for the answer. I think you meant to say . I had been subbing thinking about PE for some reason. Thanks and btw this is for engineering studies.

Yep sorry, h=60 m, fixed it.

 

[blyatman]

@StudyOnly It's pretty cool that you get to learn this stuff. Just looked at the syllabus, and I'm guessing this is part of the aeronautical engineering module?

 

[StudyOnly]

@StudyOnly It's pretty cool that you get to learn this stuff. Just looked at the syllabus, and I'm guessing this is part of the aeronautical engineering module?

Yes it is. I personally really enjoy this subject, and that module is probably my favourite. The only thing is it gets boring with the stuff on materials.

 

[blyatman]

Yes it is. I personally really enjoy this subject, and that module is probably my favourite. The only thing is it gets boring with the stuff on materials.

I felt the same way during my engineering degree - materials was the most boring part since it felt like rote learning. Really enjoyed the fluids part though, which is why I chose to specialise in that area. It's also one of the most critical yet most poorly understood fields, so there's a lot to learn and still a lot more to explore.

 

[Jig]

Yes it is. I personally really enjoy this subject, and that module is probably my favourite. The only thing is it gets boring with the stuff on materials.

I'm screwed for this subject lmao, especially materials I'm terrible at

 

[StudyOnly]

I'm screwed for this subject lmao, especially materials I'm terrible at

Ye, I know there is so much to remember, but you got some time still! You can do it! I suggest reading on topics that you are stuck at or even watching a few videos on them, there is plenty of info available on Google. Past papers are also a must.