All Questions
7
questions
3
votes
1
answer
89
views
At what height should I drop my kids from to prevent getting splashed? [duplicate]
Today as I was performing my morning biological ritual, "dropping the kids off at the pool" and what not, the cold kiss of Poseidon on my behind inspired an idea for an experiment. What is ...
- 47
-3
votes
1
answer
43
views
Problem on mechanics of bodies [closed]
I am trying to solve this problem
I thought using archimidis principle would be a way. the second body has more cavity than the first body(left body), i think, given that the 1st body will ...
- 31
2
votes
1
answer
206
views
What is the Newtonian gravitational potential for a fluid element?
Currently reading Poisson and Will and looking at conserved quantities within the framework of a fluid element. I'm looking at a section on energy of a fluid system. When it comes time to defining the ...
- 1,988
2
votes
0
answers
152
views
Dark matter "hair" flowing through the earth
Gary Prézeau of NASA's JPL has done some calculations of how dark matter might be focussed by the Earth's gravitational field (publication preprint), and the results show some remarkable hairy ...
- 39
3
votes
1
answer
465
views
How much weight can a person carry to avoid being blown over by wind?
I wonder if there is a certain amount of weight that I could carry in a rolling bag to help prevent me from being knocked over by the wind. I have balance problems and some lack of muscle strength in ...
- 31
0
votes
2
answers
2k
views
Will a helicoper which is hovering inside a closed box move with the box when we move it? [duplicate]
I got this micro helicopter to play with, you know that cheap double bladed ones you can find for $25 or so. Anyway last night I was on bed trying to sleep and I got this idea, what if we put the ...
user23971
1
vote
2
answers
4k
views
Velocity required for Horizontal Rain
Related to my previous question - Change in appearance of liquid drop due to gravity...
Ok, I think we all have noticed this practical phenomena (a kind of illusion though)... During rain (while we'...
- 9,108