How much energy is spent on fighting air resistance vs other effects when driving on a highway? |
- How much energy is spent on fighting air resistance vs other effects when driving on a highway?
- What insects/arthropods have the highest neuron counts?
- Are all stables isotopes naturally occurring?
- How did the continental crust originally form?
- What causes Heisenberg's Uncertainty Principle to be true?
- Why is there doppler beaming with light when an object moves at a substantial fraction of the speed of light?
- If quantum physics breaks down at relativistic speeds and relativity theory breaks down at the quantum level, how do high energy physicists get anything done?
- What is the biggest possible yield for a nuclear bomb?
- Does the body naturally produce ethanol ?
- Aside from Covid, are there other viruses that cause you to lose your sense of smell / taste?
- Adenovirus vaccines: If someone gets an Ad26 COVID-19 vaccine, does that mean any other Ad26-based vaccine will be less effective on me in the future, due to immunity?
- What is the timeline of mRNA vaccine response?
- Do geostationary objects have no time dilation due to relative velocity differences from the perspective of the ground under them?
- Does the edge of a galaxy have most of the young stars compared to it's core?
| How much energy is spent on fighting air resistance vs other effects when driving on a highway? Posted: 21 Jan 2021 05:21 PM PST I'm thinking about how mass affects range in electric vehicles. While energy spent during city driving that includes starting and stopping obviously is affected by mass (as braking doesn't give 100% back), keeping a constant speed on a highway should be possible to split into different forms of friction. Driving in e.g. 100 km/hr with a Tesla model 3, how much of the energy consumption is from air resistance vs friction with the road etc? I can work with the square formula for air resistance, but other forms of friction is harder, so would love to see what people know about this! [link] [comments]  |
| What insects/arthropods have the highest neuron counts? Posted: 21 Jan 2021 07:16 PM PST Tarantulas? Portia spiders? Mantis shrimp? Praying Mantises? Goliath beetles? Social insects? Social spiders? [link] [comments]  |
| Are all stables isotopes naturally occurring? Posted: 21 Jan 2021 02:32 PM PST I was wondering if there are any entirely synthetic stable(i.e. non-radioactive isotopes). For instance, a stable isotope of iron that does not occur naturally but has been synthetically produced? Edit: just noticed the title has a typo. "Stables"🤦 [link] [comments]  |
| How did the continental crust originally form? Posted: 22 Jan 2021 03:43 AM PST Is a crust with such extreme variation in thickness unique to Earth in the solar system? I know we have found vulcanism on other planets, but do any have continents like ours, or something analogous? I've been wondering about this for a few days and the only thing I've come up with is that it could somehow be a result of the collision which formed the moon, but since the whole planet would have been molten I can't really see how that would work. My best guess is that the fast-spinning Earth concentrated more mass in a band around the equator which ended up going on to form the original continental crust. Obviously things would have moved around a lot since then. Does this make any sense? [link] [comments]  |
| What causes Heisenberg's Uncertainty Principle to be true? Posted: 21 Jan 2021 08:39 PM PST I've seen three explanations for the reason Heisenberg's Uncertainty Principle occurs. I'm not going to iterate them because I don't want to unduly influence responses, so I'll keep it simple: why is ΔxΔp ≥ h/4Ï€ ? Edit: why did I think momentum was rho? [link] [comments]  |
| Posted: 22 Jan 2021 05:00 AM PST Light always travels at a constant rate, so why would the rate at which at which an object approaches an observer change the brightness? Is the light more directional when an object approaches the observer at a substantial portion of the speed of light? [link] [comments]  |
| Posted: 22 Jan 2021 12:44 AM PST |
| What is the biggest possible yield for a nuclear bomb? Posted: 22 Jan 2021 02:02 AM PST The biggest ever nuclear bomb, the Tzar bomba had a yield of 50 megatons. Would it be possible to build nukes in the Gigaton or even Terraton range? [link] [comments]  |
| Does the body naturally produce ethanol ? Posted: 21 Jan 2021 10:20 PM PST Does the body naturally produce ethanol in a normal setting ? And if it does what would happen if the production stopped ? Would it go unnoticed to the body ? Just asking to know if there's a secret opposite to drunkenness. [link] [comments]  |
| Aside from Covid, are there other viruses that cause you to lose your sense of smell / taste? Posted: 21 Jan 2021 03:00 PM PST |
| Posted: 21 Jan 2021 02:36 PM PST Text says most of it. I was reading that Ad26 is being used for the J&J COVID-19 vaccine because a lot of people are already partially immune to Ad5. Will receiving an Ad26-based vaccine (for COVID-19, for example) mean that a future Ad26-based vaccine will not work as well on that same person, due to partial or full immunity to Ad26? If so, to what degree? [link] [comments]  |
| What is the timeline of mRNA vaccine response? Posted: 21 Jan 2021 09:36 AM PST Hey! Just got my second dose so my sore arm is making me think a lot about what's going on in my body 😂 I've been doing quite a bit of reading but the one thing I can't find anywhere is the time ranges/onset of the mRNA vaccine process. For example how quickly does the cell start producing the antigen? When does it peak? When is the mRNA degraded? When is the immune response nonspecific? When does the specific kick in? Why did 2 weeks seem to be important for immunity after dose 1- is this when the memory cells are actually formed? Basically I'd love if someone could walk me through the timeline of the process! Thanks! [link] [comments]  |
| Posted: 21 Jan 2021 06:13 PM PST Objects in geostationary orbit maintain a fixed distance from a point on the ground (correct me if I'm wrong). In my mind this seems to mean there is no relative velocity difference between them. Does this mean there is no time dilation due to relative velocity differences for geostationary objects from the perspective of the ground under them? [link] [comments]  |
| Does the edge of a galaxy have most of the young stars compared to it's core? Posted: 21 Jan 2021 11:10 AM PST |
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