Electrolysis of water yields proportionally small amount of gaseous Oxygen. Where does the Oxygen go?

apolloeleven · 9時間前

Something like this is more suited for /r/chemhelp or /r/homeworkhelp.

apolloeleven · 9時間前

http://en.wikipedia.org/wiki/Avogadro%27s_law

MarsNeedsGuitars · 9時間前

A material that undergoes fluorescence usually involves a Stokes shift, where the emitted light is lower energy than the absorbed light - so it is what's happening when a material absorbs UV light and emits visible light.

The way it works is that vibrational relaxation occurs quicker than the electronic transitions, so if you absorb some amount of energy from incident light, the excited electron can relax to lower vibrational states before another photon is emitted. It is illustrated by this Jablonski diagram.

PM_ME_FUN · 22時間前

You should check out the physics FAQ. Both of your questions - and many more - are answered there.

too_many_cheetos · 1日前

You can also search past threads to find similar questions in the future.

bpeemp · 1日前

It seems you're confusing some units here. kWh is kilowatt-hour, a measure of energy - how much energy is stored in a battery. kW is kilowatts, a measure of power, or the rate at which energy is drained from the battery. They're not interchangeable. Your electric company is concerned with how much energy you're using - so using a very power-intensive appliance for a short time costs the same as using a less power-intensive appliance for a longer time, if they use the same amount of energy.

So you won't be using "10 kWh continuously", rather, you'd be using 10 kW continuously. If a battery only holds 10 kWh of energy, it will be drained after one hour of 10 kW use. Or, it'd be drained in 2 hours of 5 kW use.

When in doubt, do dimensional analysis. Like your sample calculation for the electric company only makes sense when you're multiply $ per kWh by kW and hours, rather than multiplying it by kWh and hours, which leaves you with units of dollar-hours.

Fonzyy7 · 1日前

See the physics FAQ for common questions.

jacobe35 · 1日前

It's a fairly common question - check out this thread, for example.

Phlegm_Farmer · 2日前

Check out these past threads. The interaction between two magnets actually follow different mathematical relations than gravity - they don't follow the inverse-square law. As a result, it cannot result in a stable orbit.

BeefyBeaumont · 2日前

Check out these past threads.

BrandonLang · 2日前

It is a little confusing - what do you mean by "rotating clockwise" and "counterclockwise"? Do you mean revolving (like the two bodies are orbiting a shared center of mass)?

You can also check out Lagrange point, especially L1.

Russian_Sleeper · 2日前

Check out these past threads.

rupert1920 · 2日前

We cannot allow posts soliciting medical advice. This is a question for the prescribing physician or your pharmacist.

redditashes · 2日前

Well the post can't be released because it's not asking any questions. What specifically are these questions you want answered? Perhaps that way we can help you find answers.

If you're concerned about genetics, it's probably hard to form a question in a way that isn't specific to this case.

And I'll reiterate that a primary care physician is the proper way to go here when seeking information about a specific patient's case. It is true you will not go to an orthopedic physician (never mind that that's another specialist, while a GP is a generalist) to get their eyes check, but you could go to a GP if you have initial concerns about your eyes. A GP's role in healthcare is as a gatekeeper, to diagnose patients and refer to them specialists as required; as such, if the questions cannot be answered by them, they can refer you to those who can. And without knowing what the questions are, I'm not convinced that a GP won't be able to answer them.

You can refer to the /r/askscience guidelines on asking questions and the /r/askscience guidelines regarding medical advice. If you can form your question in a way that follows those rules, then we can consider them. As it stands it cannot be released.

OB1_kenobi · 2日前

The lack of aberration in gravity is explained by general relativity, so while it is entirely possible that a new mechanism exists, there isn't a present need to explore that possibility.

PartyRooster · 2日前

Physics FAQ.

OB1_kenobi · 2日前

Check out these past threads.

A star thousands of lightyears away from the galactic center of gravity would be orbiting around where the point was thousands of years earlier if gravity can only operate at the speed of light.

Keep in mind this thread though, to answer that question. Even though changes in gravitational field propagates at c, one would not orbit where the star was, but rather where it would be.

redditashes · 2日前

While /r/askscience cannot provide any advice specific to an individual, there has been many past threads on the topic. This thread contains a lot of information that may be of use to you.

As usual though, the best source of information is the primary care physician, especially as it sounds like you want a back-and-forth discussion.

gloriouspenguin · 2日前

There are actually a large number of compounds released when you cook garlic, and low pH - such as from the addition of pickles - helps the reaction proceed. Some compounds implicated include thiosulfinates and pyrroles.

Don't worry about the colour though - green garlic is actually desired in the preparation of Laba garlic.

Derpy034 · 2日前

No. Light does not have "zero energy" because its mass is zero. Light does have momentum, and no, the equation p = mv isn't applicable to light.

Please refer to the /r/askscience guidelines for answering questions. It seems you are unfamiliar with a number of topics you've commented on - or at the very least, not familiar enough to understand the finer nuances of the topic to provide a correct answer.

ZyroCrystal · 2日前

Please do not speculate in /r/askscience.

livmoore · 3日前

Here you should distinguish between math in an ideal sense, and math in its real-world application. So your examples of math class or 5 x 5 = 25 don't consider any uncertainty at all - that's fine, because you're learning about the rules of math.

Significant figures come into play when the input and output have uncertainty in them:

About the 'an answer can't be more precise than it's measurement tool', why is that a rule?

Because you're trying to faithfully represent the certainty of your answer. If you're, say, trying to calculate how many donuts you've eaten last week, but you using very crude measurements (i.e., "meh, about 5 donuts a day for something like 5 days", when reality you aren't sure if it's closer to 4 or 6 donuts or days), you cannot with confidence state that you have eaten exactly 25 donuts, when the answer could range from something like 16 to 36 donuts).

Suchosh · 3日前

See this thread, found with a simple search. The short answer is that the sun isn't "on fire" (i.e., undergoing combustion), so it won't be "put out" by water.

curybomb123 · 3日前

Have you checked out the Wikipedia article on combustion? Is there a particular section you want further clarification on?

flutt3rbye · 3日前

See the Astronomy FAQ.

Also, the observable universe has a radius of some 46.6 billion light years.

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