Does sound stack? |
- Does sound stack?
- Why is it that propellers are usually in the front of airplanes but in back of submarines/ships?
- Why are acoustically guided weapons an option in the ocean but not in the air?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- How long until the universe's ambient temperature is 1 kelvin?
- When sending things to other planets, why do we choose not to use the moon as a mini gravity-assist? Surely it would just reduce fuel (even slightly) and thus reduce the mass of spacecraft?
- Can rare metals or other high atomic number metals ever become a negatively-charged ion?
- Why is UNIX so revolutionary?
- How will Cassini survive??
- What determines how many chromosomes a child will have if the parents do not have the same amount?
- What is the apex of the seal in this gif?
- How do computers store physically store data? What does data look like on the atomic level?
| Posted: 29 Oct 2015 06:00 AM PDT Let's say I have 2 speakers, each outputting 90dB @ 1m. If I were to measure the volume, would the volume be > 90dB? Or would the volume be 90dB? [link] [40 comments]  |
| Why is it that propellers are usually in the front of airplanes but in back of submarines/ships? Posted: 28 Oct 2015 09:32 AM PDT Why can't you reverse it? (propellers in the back of airplanes and in the front of ships/submarines) [link] [99 comments]  |
| Why are acoustically guided weapons an option in the ocean but not in the air? Posted: 28 Oct 2015 10:45 AM PDT For example, most modern stealth warplanes take great care to minimize their infrared and radar signatures, but are still quite loud. Would it be possible to track these planes acoustically? [link] [26 comments]  |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 28 Oct 2015 08:02 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [94 comments]  |
| How long until the universe's ambient temperature is 1 kelvin? Posted: 28 Oct 2015 07:07 AM PDT How long until the universe's ambient temperature is 1 kelvin? What about average temperature? [link] [24 comments]  |
| Posted: 28 Oct 2015 07:47 AM PDT |
| Can rare metals or other high atomic number metals ever become a negatively-charged ion? Posted: 28 Oct 2015 12:50 PM PDT I'm aware that things tend to get messier the further you go down the table (like how "unreactive" Xe can form XeF6) due to the added complexity of d and f orbitals. Are any of the more complex metal ions capable of becoming a stable negatively charged anion instead of their more common cationic states? [link] [10 comments]  |
| Posted: 28 Oct 2015 09:19 AM PDT |
| Posted: 28 Oct 2015 06:57 AM PDT So Cassini's about to plunge into one of Enceladus' ice plumes at 19,000 miles an hour. My question is... How will it survive that? Are the particles of ice THAT small?? Because if they're any bigger than a grain of sand, Cassini's done for, no? [link] [4 comments]  |
| What determines how many chromosomes a child will have if the parents do not have the same amount? Posted: 28 Oct 2015 07:43 AM PDT Starting back when nothing resembling humans existed, I'm curious as to how we came to have 23x2 chromosomes. I know that chromosomes can split, fuse and duplicate entirely but how were those passed on to children when the other parent most likely did not have that happen to them? And in the case they are inherited, how were they able to reproduce (not become sterile) without the corresponding chromosome inherited from the other parent? [link] [5 comments]  |
| What is the apex of the seal in this gif? Posted: 28 Oct 2015 06:56 AM PDT My coworker and I are fascinated by the pure strength and coordination of the orca in this gif. Exactly how high was the seal thrown? From what we found on Wikipedia, a fully matured harbor seal can be over 6ft long and weigh over 250 lbs. Is the seal in the gif fully matured? What was the apex of the seal and how much force would be needed to get it there? [link] [6 comments]  |
| How do computers store physically store data? What does data look like on the atomic level? Posted: 27 Oct 2015 09:13 PM PDT Since you need a hard drive to store it, data must have some physical form, right? [link] [7 comments]  |
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