14 more posts in this thread. [Missing image file: Lighthouse.jpg]
I'm 18 years old, and I started getting episodes of insomnia in early January (I was 17 at the time, my birthday is in February) and in February it developed into something more persistent. I tried diphenhydramine as well as melatonin and nothing seems to be helping me. I feel deprived of motivation, no libido, and dumber than ever before. It is now March, and although the insomnia has been somewhat alleviated, I still don't get enough sleep during the night. I have accumulated an overwhelming amount of sleep debt and I feel absolutely dead mentally. To worsen my situation I have school to tend to as well, (and they are AP classes). I want to return to my original mental state very much. I wanted to know whether insomnia causes permanent/irreversible brain damage (especially at my age since I'm only 18 and my brain is still evolving). I sleep better now, but I still feel tremendously burdened mentally by brain fog due to my sleep debt. Please reply asap. Your feedback will be immensely appreciated.
18 more posts in this thread. [Missing image file: superconductor magnet.jpg]
Since so much cool stuff (faster than light travel, teleportation, wormholes, death rays) isn't allowed under normal science, what do you consider the coolest thing that legitimately exists, within the bounds of scientific knowledge?
I'd have to say superconductors. Even without the room temperature variety, they're like something out of science fiction, and you can do genuine sci-fi things with them.
2 more posts in this thread. [Missing image file: Wimshurst.jpg]
Hello /sci/, I'm taking Physics II in college right now and it is really giving me a rough time. Lectures are not my strong suit and consequently don't learn anything from the class. If anyone is willing to help me out I would be extremely grateful. I don't need answers, just methods to get them. This is one problem I have...
Two insulating spheres have radii 0.300 cm and 0.500 cm, masses 0.450 kg and 0.700 kg, and uniformly distributed charges of -2.00 µC and 5.50 µC. They are released from rest when their centers are separated by 1.00 m.
(a) How fast will each be moving when they collide? (Hint: Consider conservation of energy and of linear momentum.)
(b) If the spheres were conductors, would the speeds be greater or less than those calculated in part (a)? (Note: Assume a reference level of potential V = 0 at r = infinity.)