Maybe it would help to clarify your question HHayashi, if you would explain how you think the number '1' could be "reached" in the same sense you are looking to reach 'zero'...there are plenty of limiting processes that approach 1, but never reach it. I don't understand the difference between...
Energy is a great example, Feynman used to describe it as a convenient check list to keep track of the parts of a system as they interact. Saying it is related to the capacity to do work isn't anymore physical than saying the electric dipole moment is related to the dipole's capacity to...
I was only somewhat joking. Like Mark said you are using limits to prove you can't reach zero when a limit is DEFINED as the number you get close to but never reach. A bit of a tautology. That's different from being able to define the concept of 'zero'. Zero is like all other numbers it became...
Do you know what the physical meaning of the moment of inertia is? I've found that questions like this in a Physics class will almost always be answered with, "It's a collection of symbols we see often enough to give it a special name."
That being said, it's a measurement of the distance...
I'm being completely serious when I say I love these kinds of questions. They are the kind that a working Physicist might never even think to ask ; )
That being said there are couple of things I think I could add to help you understand this. The first being that you are asking about a part of...
1 watt = 1 joule of energy / 1 second
And has you lift the piano you are doing work ( in Joules ) to raise the piano against the Earth's gravity so now you have a connection between time ( what you are looking for ) and the energy involved in lifting the piano.
A free body diagram might...
I assume it's something like that. Thanks for your link, because I wasn't able to find ANYTHING, but by the website's own admission they have only been able to help a handful of villages so far and from the video you can see that even large cities like Quetzaltenango are bright green. The...
Continuing what mfb already correctly pointed out...
Mass IS the gravitational charge you are looking for. Part of the problem seems to be that you portray mass to somehow be a larger effect than electromagnetic charge. When you drill into the atom past the protons and electrons that carry that...
Hey sir, that was the first thing I thought too. Here's the list I found...
The list:
1. United States
2. Eastern United States
3. Madagascar to southwest of Australia
4. South of Australia
5. Northwest coast of United States to Central South America
6. Southern to the Northern Pacific...
The field you removed carried the energy that creates that potential. So when you remove the source of the field the potential energy will disappear because the energy that caused it was removed from the system. By whatever magic you accomplished that since Gauss wouldn't be happy you removed a...
If any group of people can help me with this interesting one it's you folks. So I hope most of you have seen that wonderful video of the ISS flyover of the Earth. In case you haven't for reference...
Other than being blown away like everyone else something particular caught my eye, and after...
I wanted to hear suggestions for the...roughly...5 most essential physical problems that a serious working physicist should understand how to solve. Like the conceptual goals for someone who is just getting into the center of my study of physics (headed towards graduate school in a year.) Thanks...
The induced current opposes the change in magnetic flux through the loop. As you push the bar to the right you are decreasing the amount of "out of the page" magnetic field so the loop creates a current that would result in MORE magnetic field "out of the page".
Put your hand in the "thumbs up"...
a = v^2/r, for centripetal motion.
Then use that acceleration value to relate the opposing forces. The tension in the string and the acceleration of the weight. A Newton's second type equation. Solve for the mass. Total F = T - ma = 0