- #1

Callmelucky

- 136

- 27

- Homework Statement:
- I might be wrong but I think it is author.

- Relevant Equations:
- Pressure= density * g * h

Can someone please answer this question, so I can figure who is wrong here, me or author. Thank you.

1.question (picture below): empty epruvete turned upside down is dipped in glass filled with water to the depth H. While doing that water enters the epruvete and reaches height of h. The AIR pressure inside the epruvete is: I wrote just density(of air) * g(gr. const.)* height(of epruvete - h). The answer is apparently Po(air pressure) + density * g(gr. const.) * (H-h). I am not sure if it's ment density of water or air(since it's not stated), but if they mean density of water I don't understand how is that so, I don't get what water has to do with air pressure inside the epruvete(if pressure = F/A), so please explain if you can/want. Thank you.

But anyway I think that air pressure inside the epruvete should be density(of air) * g(gr. const.) * height(of epruvete - h), if hidrostatic pressure= density * g * height.

Thank you.

1.question (picture below): empty epruvete turned upside down is dipped in glass filled with water to the depth H. While doing that water enters the epruvete and reaches height of h. The AIR pressure inside the epruvete is: I wrote just density(of air) * g(gr. const.)* height(of epruvete - h). The answer is apparently Po(air pressure) + density * g(gr. const.) * (H-h). I am not sure if it's ment density of water or air(since it's not stated), but if they mean density of water I don't understand how is that so, I don't get what water has to do with air pressure inside the epruvete(if pressure = F/A), so please explain if you can/want. Thank you.

But anyway I think that air pressure inside the epruvete should be density(of air) * g(gr. const.) * height(of epruvete - h), if hidrostatic pressure= density * g * height.

Thank you.

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