Tagged Questions
7
votes
2answers
90 views
How to design a deliberately biased coin?
For demonstrating basic probability concepts, it would be nice to have a coin-like object that lands heads/tails not in 50/50% ratio, but biased in a way that can be revealed in a short experiment. ...
-1
votes
1answer
128 views
What is the quantity in physics that is advanced from speed? [closed]
What is the quantity in physics that is advance from speed?
i know one is velocity, one is speed, one is acceleration.
-1
votes
2answers
346 views
Where can I find spring force problems, with solutions, that involve rectangular coil springs [closed]
Where can I find compression spring force problems and associated solutions that utilize rectangular coil springs?
3
votes
1answer
189 views
Some questions about the logics of the principles of independence of motion and composition of motion
In high-school level textbooks* one encounters often the principles of independence of motion and that of composition (or superpositions) of motions. In this context this is used as "independence of ...
3
votes
3answers
1k views
Does conservation of momentum really imply Newton's third law?
I often heard that conservation of momentum is nothing else than Newton's third law.
Ok, If you have only two interacting particles in the universe, this seems to be quite obvious.
However if you ...
6
votes
7answers
2k views
How does the earth move?
My son who is 5 years old is asking me a question about how the earth moves around the sun. What answer should I give him?
10
votes
6answers
3k views
How do you explain spinning tops to a nine year old?
Why don't spinning tops fall over? (The young scientist version)
My nine year old son asked me this very question when playing with his "Battle Strikers" set. Having studied Physics myself, I am very ...
