Oh, I definitely see what you guys are saying about springs wearing out by repeated stretching/compression, but I'm just talking about (steel) springs being compressed and staying in the same position for a long period of time.
Hi guys!
I was curious if anyone here knows what causes springs to wear out. Obviously, repeated stretching and releasing springs causes wear on the spring, no?
However, I was also curious as to whether keeping springs compressed for extended periods of time (say, up to a year or two) will...
If you go through the years of work to get a PhD, can you earn more money as a physicist outside of the university than other physicists who may only have a bachelor's or master's?
I heard that there's a lot of people with a PhD here, and I was curious about that, so I figure this would be the best place to ask.
I have just a few questions for the Americans here that have PhDs, regarding the process required to get one.
1. How long is it supposed to take?
2. Is it...
My physics in school says: "Air molecules are too small to be excited [by microwaves], and [they] also have no effect on glass, plastic, or ceramic."
So I thought hey, let's test that! I'm glad I did. See, I put a empty glass measuring cup from the pantry into the microwave and put it on high...
I have a feeling that this might sound like a question I should already know the answer to, but here goes.
If a man holds a heavy weight up, he's expending energy to work against gravity and keep it there. However, he is not doing work if he doesn't move the weight.
A magnet can stick to...
Interesting... did the pieces which stuck by only one corner ever repel?
I'm thinking that perhaps it's the low contact area of dust that causes it to resist sufficient charge by conduction to be repelled.
But that doesn't explain why, after wiping off the dust, the paper wasn't repelled, as in my experiment.
I think the discrepancy between my experiment and his may be the magnitude of the static charge present on the TV. When I carried out my experiment, the TV had been in use for at least an...