jbriggs444's latest activity
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jbriggs444 replied to the thread A three month long summer vacation from public school seems stupid.What about literature from Edward Everett Horton? -
jbriggs444 reacted to BillTre's post in the thread A three month long summer vacation from public school seems stupid with
Like.
Woe, woe, woe. When I was a kid (different times) Saturday mornings were very important to my education. I learned a lot of sarcasm and... -
jbriggs444 replied to the thread How fast is the fly's shadow moving?.I suspect that the intended meaning mean that the fly is flying on a heading of 204 in still air. "Bearing" is the direction from a...
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jbriggs444 replied to the thread I Is calling fictitious forces "not real" just about terminology?.I would say that nothing physical needs to change its state of motion. It is just coordinate systems. Scribbles on pieces of paper. This...
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jbriggs444 reacted to PeroK's post in the thread I Is calling fictitious forces "not real" just about terminology? with Like.
The simplest explanation, IMO, is this: If you measure an object to be accelerating, then there are two different reasons for this: 1)...
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jbriggs444 replied to the thread I Is calling fictitious forces "not real" just about terminology?.Yes. I agree with pretty much everything you have written about the distinction between real and fictitious forces. A real force (or...
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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...
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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
Sad.
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...