Theoretically the efficiency of a solar panel can’t pass 31 % of output power, why ?? |
- Theoretically the efficiency of a solar panel can’t pass 31 % of output power, why ??
- Theoretically, if a rocket ship kept constant thrust on in space with unlimited fuel, will it keep accelerating indefinitely?
- Why do delocalised electrons result in a more stable compound?
- Why does the moon have so many impact craters compared to the Earth?
- Does gathering information about a thermodynamic system decrease its thermodynamic entropy?
- What causes the "fear" of water during rabies?
- How do an insect’s antennae joints work? I’ve seen the joints on an ant’s antennae from a microscope and they seem to be a simple ball. How do they move around?
- Wouldn't a gamma ray be able to knock electrons out of the nucleus in silicium?
- What are the major restrictions of cold fusion? Is there any chance of it happening, and how?
- I'm on a small to mid-sized boat, far from any coast, and a tsunami is heading in my direction. What happens? Do I notice anything wrong?
- How exactly does mechanical energy translate to calories burned?
- Does high/low frequencies play a role in how much heating damage is done from loud music?
- When will a horizontally-hung rope break under its own weight?
- How did the Megalodons go extinct, and if evolution made them into sharks why are they so small?
| Theoretically the efficiency of a solar panel can’t pass 31 % of output power, why ?? Posted: 17 Feb 2019 06:06 AM PST An information i know is that with today's science we only reached an efficiency of 26.6 %. [link] [comments]  |
| Posted: 17 Feb 2019 01:33 AM PST |
| Why do delocalised electrons result in a more stable compound? Posted: 17 Feb 2019 06:36 AM PST For example, comparing cyclohexa-1,3,5-triene and the structure of Benzene, due to the delocalised ring of electrons in benzene, it is more stable. Why is this the case? [link] [comments]  |
| Why does the moon have so many impact craters compared to the Earth? Posted: 16 Feb 2019 09:42 PM PST |
| Does gathering information about a thermodynamic system decrease its thermodynamic entropy? Posted: 16 Feb 2019 11:28 PM PST If you have an ideal gas in a chamber, and you have the ability to see individual particles, can you extract useful work out of it? If I know that a certain particle has a higher than average kinetic energy, theoretically I can extract useful work out of that particle using Szilard's 1 particle engine, can I not? Thus, getting that information reduce the entropy of that chamber because I can get useful work out of it. Does this mean that the thermodynamic entropy got converted to information entropy? It may increase the thermodynamic entropy of the memory unit that is holding that data, to keep with the 2nd law. Is there a problem in this logic? Thanks! [link] [comments]  |
| What causes the "fear" of water during rabies? Posted: 16 Feb 2019 11:14 AM PST I often try to figure this out with the internet they all say that it causes convulsions in the throat but I always wondered why, what causes the human body to convulse with rabies, I never got a clear answer [link] [comments]  |
| Posted: 16 Feb 2019 07:46 AM PST |
| Wouldn't a gamma ray be able to knock electrons out of the nucleus in silicium? Posted: 16 Feb 2019 05:13 PM PST I've read that silicium is used in solar panels because solar rays can knock their electrons out the nucleus, and because gamma rays are stronger than solar rays and can travel really far shouldn't they also knock them out? [link] [comments]  |
| What are the major restrictions of cold fusion? Is there any chance of it happening, and how? Posted: 16 Feb 2019 09:03 PM PST |
| Posted: 16 Feb 2019 07:13 AM PST |
| How exactly does mechanical energy translate to calories burned? Posted: 16 Feb 2019 09:57 AM PST Say I lift a 25kg weight from the floor to my chest (about 1.5m) -- around 370 joules of potential energy. If a calorie is roughly 4.2 J, does this mean I just burned a little under 90 calories? If not, how does mechanical energy like this translate into how calories are burned? That seems like a lot of calories, but I'm not sure where else the energy would come from. Or, are there different definitions of calories? [link] [comments]  |
| Does high/low frequencies play a role in how much heating damage is done from loud music? Posted: 16 Feb 2019 07:50 AM PST I'm curious whether one person standing in front of a higher frequency speaker would end up more 'ear shot' the next day, compared to someone standing in front of a bass speaker. Lower frequencies like bass and sub-bass have longer wave lengths and can be felt by the vibrations they cause. On the other hand high frequencies can't be felt, they have shorter wave lengths, thus leading me to believe they're the culprit for the 'shot ears' and hearing loss at concerts. [link] [comments]  |
| When will a horizontally-hung rope break under its own weight? Posted: 16 Feb 2019 10:38 AM PST For example, say I tied two ends of a long rope to the top of two radio towers (of equal height), how far apart could these towers be before the rope would break from its own weight? I've tried to look into this before, all answers seem to be for a vertically-hung rope. [link] [comments]  |
| How did the Megalodons go extinct, and if evolution made them into sharks why are they so small? Posted: 16 Feb 2019 08:53 AM PST |
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