jbriggs444's latest activity
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jbriggs444 reacted to kuruman's post in the thread Struggling to understand the concept of this question (ice cube in water optics question) with
Like.
For future reference: Please provide the full statement of the problem exactly as given to you including any diagrams. If the answer is... -
jbriggs444 reacted to haruspex's post in the thread Struggling to understand the concept of this question (ice cube in water optics question) with Like.
The apparent height of the whole block is the sum of the apparent height of the submerged portion and the apparent height of the exposed...
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jbriggs444 reacted to PeroK's post in the thread I I don't see how a black hole's event horizon can be crossed with Like.
Yes, that's an excellent summary. There is a further point that an observer is not obliged to anayse things using any particular...
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jbriggs444 replied to the thread Struggling to understand the concept of this question (ice cube in water optics question).Anyone with eyes that function underwater and using stereoscopic binocular vision for distance detection will correctly determine...
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jbriggs444 replied to the thread A three month long summer vacation from public school seems stupid.Here in the U.S. the number of days per school year is set by state law. The local school districts are then free to schedule the school...
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jbriggs444 reacted to vdance's post in the thread I've come across another fluid pressure problem I don't understand with
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These structural designs represent hypothetical solutions I developed while pursuing the goal of “extracting water from the top while... -
jbriggs444 reacted to vdance's post in the thread I've come across another fluid pressure problem I don't understand with Sad.
Yes, you're absolutely right. With the help of AI, I understand what you mean now. Thank you!
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jbriggs444 reacted to vdance's post in the thread I've come across another fluid pressure problem I don't understand with Sad.
I have not yet considered the overall efficiency of the system, but according to the law of conservation of energy, a specific amount of...
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jbriggs444 replied to the thread I've come across another fluid pressure problem I don't understand.What is the stroke distance? That is, what is the height difference between the piston at the bottom of a stroke and the piston at the...
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jbriggs444 replied to the thread I've come across another fluid pressure problem I don't understand.Yes. I think that everyone here understands that. You want the total of: 1. The force of water pressure on the bottom surface of the...
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jbriggs444 reacted to Steve4Physics's post in the thread I've come across another fluid pressure problem I don't understand with Like.
Yes. Post #26 was intended for the OP - in case they didn't understand the underlying physics. My school physics teacher (from many...
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jbriggs444 reacted to Steve4Physics's post in the thread I've come across another fluid pressure problem I don't understand with Like.
You may have some misundestandings - even about the forces in Fig. 1. Try working through this: Consider the simple Fig. 1 setup...
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jbriggs444 replied to the thread I've come across another fluid pressure problem I don't understand.I do not disagree with this at all. If we are working with absolute pressures and ignoring surface tension then water pressure is always...
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jbriggs444 replied to the thread I've come across another fluid pressure problem I don't understand.For a massless piston assembly subject to no external forces other than water pressure, the calculation for ##F_3## is immediate and...
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jbriggs444 replied to the thread I've come across another fluid pressure problem I don't understand.You are seeking to design a pump? It is indeed quite challenging to design a pump that raises water without requiring power.