Economy Definition and 99 Threads

Let me start by saying the idea isn't mine at all. It's actually somewhat usual within Science Fiction works. Maybe one of the most popular appearances of the concept is the videogame Stellaris where there is commerce with aliens so a universal currency is very convenient. In economics, money...

This is the problem, This is the textbook solution ; i think the textbook solution is not correct! My thought, ##S_{max}## will be given by $$\frac {dy}{dS}=0$$ $$\frac {dy}{dS}=\frac {-1}{400}S+\frac {1}{5}=0$$ $$S=80$$ It is maximum economy because ##y{''}<0##, i.e by use of the second...

Suppose the world's economy crashes, this would mean : 1) it was not the whole world, since the Earth economy is a closed system, so the well going economy went somewhere else not known ? 2) there are extraterrestrial economies outside the solar system maybe ?

I am considering switching to a math major with a track in actuarial science (curriculum here https://catalog.louisville.edu/undergraduate/majors/mathematics-bs/#trackrequirementstext), with a minor in computer science (since that will only take me 2-3 more classes). I was wondering, given the...

I am writing a space opera, that is meant to be hard, except some alien magic. So far, i have the following points : asteroid belt is the most valuable for rare material mining, there they live in O Neil cylinders. Travel is done by fusion ships, that can maintain miliG-s of constant...

So I'm guessing we need our end unit to be in MPG? a) walking ( 220 kcal/ 1 hr )⋅ ( 1hr / 3 mile ) = 73 .3 kcal/mi⋅⋅ (73 .3 kcal/ 1 mile) ⋅ (4,186 J/1 kcal) = 3,06833.8 J/mi (1.30 x 10^8 J/ 1 gal)(1 mile / 3,06833.8 J) = 423.68 MPG b) bicycling Not sure as it says,"...when riding at 10.0...

Hello all, Suppose that in a monopoly game (board game), a player passed through Go and receive $2000 as salary. Then he landed on Income Tax and he paid $2000 too. It means that he paid 100% tax rate, in other words he paid all of his salary only for the tax. What the effects and implications...

More and more it keeps ocuring to me that the modern economies and styles of government that we have now may have a fast approaching expiration date. For example, with AI and autonomous robotics, we could soon have exponentially fast growing industrial complexes in space. And the amount of...

With a new fuel cell to make ammonia from nitrogen and water (producing oxygen as a side product), Australian researchers are hoping to develop an efficient carbon-free way to store and transport energy from sources like solar panels and wind generators. Ammonia's: Longish Science mag news...

I'm reading about the parable of the broken window, which states: I was wondering if this can be related in some way to climate change as a whole. My reasoning is that given that climate change is a consequence of a lack of knowledge about the sum total negative and positive externalities of...

Chart: Source. So, inflation has been low, which has been troubling economists and the FED over the effectiveness of undertaken Quantitive Easing (QE). What's the cause of this, and are banks holding onto excess reserves the real issue here? What are your thoughts about all this liquidity in...

As in the title, I'm curious to know if in you opinion our economy work in a meritocratic way, promoting people that deserve wealthy and penalize who doesn't deserve nothing ? Thanks.

Forgive my rather philosophical posted question; but, having been in college for little more than a year, I can't but help to feel that what was once considered a noble goal of 'conditioning the soul' (as Plato might say) via education has instead been turned into the gratification of wants and...

In economics, Adam Smith coined the term (rather unintentionally) 'the invisible hand' of economics that drives all the efficiency gains and progress entailed by using the market to mediate and satisfy human wants and needs. The rather recent advent of the market entity has led to enormous...

I've been following a lot of news and articles about various technologies potentially providing abundant energy at dirt cheap prices. I don't want to advocate about any single technology that will provide cheap and abundant energy; however, it is becoming more and more clear that renewables will...

I understand that in free-market economies that people have the right to private property and own the means of production, while in a communist economy everything is owned by the government. What does the ladder mean, though? Clearly, even if a communist country, people have their own...

In my undergraduate days I remember learning about the double slit experiment etc. in quantum mechanics. And I'm only now starting to learn about the Standard model. So there are these fields; higgs, electro-magnetic, strong and weak nuclear. So if a photon is a perturbation in the...

The part that I roughly understand: 1) Drag equation, drag increases by square of velocity, thus if it was only factor to be taken into account then the lower speed the better. 2) In case of cargo ships there is a policy of decreasing speed to reduce fuel usage, called "slow steaming". It...

A statement I often hear from Warren Buffet in interviews is (I'm paraphrasing here) "The GDP is forecast to grow at 2% per year and the population is forecast to expand 1% per year. So, Americans will continue to get wealthier, at a rate of 1% per year." The big point he's missing is that the...

Hey, guys, I came up with a fool-proof plan to grow the economy. What we will do is inflate asset prices. We'll get real estate agents to appraise houses at artificially high values and we'll also drive people into the stock market through QE/inflation. Then everyone will feel like they have...

Homework Statement Ellen wants to expand her factory with a $8500 addition. It will increase revenue by $7,000 per year, and only increase costs by $1,000. The $8500 consists of $2900 for a building and $5600 for machinery. US depreciation rules apply. The income tax rate is 35%. Based on her...

Homework Statement John pays $500 to a tailor for a regular supply of new shirts. The tailor delivers 5 black shirts. He next wants to purchase 10 red shirts at the contract rate of $11 per shirt. For the black and the red shirts together, what are the fixed and variable cost of the shirts...

Japan Slides Into Recession as Tax Hike Takes Toll http://abcnews.go.com/International/wireStory/japan-slides-recession-tax-hike-takes-toll-26960189 EU seems somewhat optimistic, at least about EU and US. http://ec.europa.eu/economy_finance/publications/european_economy/2014/pdf/ee2_en.pdf...

On the Wikipedia page for Radix Economy it shows how to find the economy (efficiency for data storage) of a positive real base like 2, e, 3, pi, etc but how would I find the economy of a complex or negative base? http://en.wikipedia.org/wiki/Radix_economy I want to find the economy of Donald...

Does any economy actually have a "consumption tax"? Since it's tax time for individuals in the USA, I have some idle curiosity about proposals for changing the tax laws. In particular, I wonder about replacing income tax with a "consumption tax". Is there any country or economy that acutally...

Is a PhD I This Economy Worth It? As I am currently looking to reapply to grad schools, I noticed when I call/email professors regarding research projects most of them say they have low or no funding and cannot support new grad students. Now, assuming they are not lying to me, the number of...

Consider a situation in which two motorists, Arwa and Bao, share the same driving route but own different sized vehicles. Arwa fills up her vehicle’s tank at a station along her normal route for US$ p(1) per litre. On the other hand, Bao drives an extra d kilometres out of his normal route to...

Homework Statement i just have a simple question. in engineering economy, when you're comparing alternatives and they don't tell you whether to use PW, FW, or AW method, can you just use any one? Homework Equations The Attempt at a Solution

The Federal Reserve announced an indefinite $40 billion per month round of quantitative easing. This new phase of easing will combat a weakening economy, strengthen confidence in the financial system and assure that the central bank's mandates on unemployment/housing are met...

Congratulations, you've created a fuel cell car! Now you need electricity or fossil fuels to create hydrogen to fuel the car. So burn some coal to get electricity. How exactly does this help the environment again? What am I missing here?

To work out the answer to this question, do I just find the total Mr of the products and divide it by the total Mr of the reactants (and then multiply by 100, and pick the biggest percentage?) Cheers

Is anyone aware a good forum do as/discuss economy issues? Something like this one, but with the theme economy. Thank you regards

Long time reader, first time poster here! Scroll down for actual question, here's some back story: Within the coming days/weeks I'll send in my university applications here in Sweden but I have yet to decide what subject to choose. This time last year I applied for a 3-year bachelor's...

Homework Statement Standby Power for water utility pumps and other electrical devices is provided by diesel-powered generators. As an Alternative, the utility can use natural gas to power generators, but it will be a few years before the gas is available at remote sites. The utility...

This is an excellent show, IMO. http://billmoyers.com/episode/full-show-economic-malpractice-and-the-millennials/

Note to mods: this is my first post, unsure about the best forum for this query. Please feel free to move if necessary. Thanks. I have this wild notion that one possible way to “quickly” replace fossil fuels is methanol. Methanol is the simplest alcohol (CH3OH), liquid and stable at room...

What do people think of South Korea's economy. They seem to have had a lot of growth. What would people attribute this to. They are highly educated in Korea but the Korean market is not able to absorb the amount of people with degrees. Is this a disaster in planing or has this helped to drive...

With the rise in Texas unemployment, the rise in Texas high school dropouts, one of the highest levels of workers being paid minimum wage and below due to the lack of education in Texas, does Perry have a plan to prevent this from happening to the US if he was elected? With a track record...

http://www.fueltec.no/" I don't know whether this is the right place to post but I have come across the above website. It seems to be another of these magnetic treatments for improving fuel efficiency. Does anyone have an opinion as to whether it's a goer or just a way of chucking money away...

I've googled this question and saw some answers already, but they do not convinced me. What would happen in the economy if everyone in the world wake up and see 1 billion dollars in their house or stuff in where they live. Some people would want to build a huge house or buy lots of...

Will switching to alloy wheels (typically 17% lighter than steel) noticibly improve fuel economy? It seems like we should be able to calculate a rough estimate if we had necessary data but i don't. Has anyone been there?

http://www.bbc.co.uk/news/world-africa-12810828 This tells that African immigrants are finding their home countries better than America. A simple observation linking immigration to the economic cycle is something really interesting. There is not data in that article however, I noticed that...

I'm naive on this subject and have no opinion. But I was curious after reading an article in the March 25 issue of The Week what more knowledgeable observers might have to say. The text of the article is reproduced below. <<huge quote of copyrighted material deleted>>

Saw this for sale at Best Buy: http://reviews.bestbuy.com/3545/9754101/fuel-doctor-fuel-efficiency-booster-gray-reviews/reviews.htm The claim is that via power conditioning, the device improves the accuracy of your car's sensors and other electronic devices, thereby improving the car's...

In EE when one has 40 transistor all agree that it is to complex for a person to understand without using computer simulation. In an economy with 7 billion people and millions of groups, organizations, corporation, governments most seem to feel that simple analogies are good enough to understand...

If trading in company capital on the open market was banned, there could be no more boom and bust cycles caused by dramatic changes in fickle confidence, while an investor could still sell his shares in a company, but only for their real, book value and not for a fictional market price. If banks...

http://www.bbc.co.uk/news/business-11678022 Good time to buy US dollars?

I'm looking for good economy textbooks for the mathematically inclined (me :-) ). Anybody any suggestions ? Mostly interested in monetary aspects and macro economy but might also be broader.

The theory goes that lowering interest rates allows people to borrow more and this stimulates consumption. However, as I mentioned in https://www.physicsforums.com/showthread.php?t=415842" low interest rates allow people to hold onto non perishable goods longer. The consequences is a surplus of...

hi, what is the exact best speed for fuel economy? why is 5mph less economic than 75mph?