Human Definition and 880 Threads

Science or invention, which has contributed most to human comfort?

Homework Statement A girl pushes her little brother on his sled with a force of 300N for 750m. How much work is done if the force of friction is a) 200N and b) 300N? Homework Equations W = F \Delta x The Attempt at a Solution F_{net} = F_p - F_f F_{net} = 300N - 200N = 100N...

Ok, propably everyone here knows that IN THEORY it is possible for a human to fly. This question has been bugging me a lot and I know it can be solved using some kind of aerial physics (Dont know the term :D). Therefore my question is: How fast must 75 kilograms weighing human wave his hands...

Hello. I have been studying in my philosophy class a work by John Searle regarding whether it is possible to program a computer program (with hardware) to duplicate the functions of a human. I wrote up a six page paper against Searle and supported the prospect of a humans computer, but I do...

Homework Statement Suppose the lens in a human eye has far focal length equal to f[SIZE="1"]0 = .0405 m, for distant objects to be in focus. (a) An object K is 1.72 m from the lens. How much should the focal length change to focus on the object K? (b) What is the magnification ( = image size...

I reposted because I "bumped" this thread already with 2 replies and no one is answering.

Do humans have different EEG readings than animals?

Does the human belong to a kind of system? Sometimes it feels like the world isn't natural. That all of our feelings and happenings really don't matter? And some things that seems logic are actually illusions of our mind? That the things that happens between friends and people has nothing to...

HI there, I'm a practicioner of Parkour, which is a discipline that involves training to allow yourself to pass any obstacles simply using your body. One of the movements which we use is a roll, designed to aid landing from height. As I understand it, the basic idea is that the roll...

gooooood evening.. i have presentation about the effect of vibration on human and i did not find what i want and i did not understant the topices when i searched from google .. so I will be grateful if anyone could help me..

I believe I read the Black Death or Black Plague that effected Europe created a noticeable genetic bottlenecking in Europeans. HIV is still relatively new, but has anyone heard or have any ideas how HIV may effect human genetics and culture?

Hello, Here is my question: Just imagine the sun would stop shining, without exploding. It would just totally disappear without causing harm. How long would human race survive without the benefits of the sun? 10 minutes? 10 hours? 10 days? Could it stand the cold longer? How long would it...

Is, selfish, if it does not give some immediate or short term advantage no one gives it a thought, how many of the total population of Earth give a single thought to some grand unification theory?

I will try to follow the guidelines in the template but I may fall short as I copied and pasted this from another one of my threads on another forum. Apologies. I know I just joined but I'm in dire need of some homework help as I don't what to search on google and it's difficult to find...

[FONT="Century Gothic"][SIZE="4"]is it true that human minds are connected by neurons or whatever? i heard that if u r thinking of something or someone, the other person thinks of the same thing?:approve:

Homework Statement Joe is hiking through the woods when he decides to stop and take in the view. He is particularly interested in three objects: a squirrel sitting on a rock next to him, a tree a few meters away, and a distant mountain. As Joe is taking in the view, he thinks back to what he...

Trivial pursuit and human extinction I was awakened last night by a loud knocking on my door. Fortunately the knocking was not reality but was a dream. When I “heard” the knocking I sat upright in bed with my heart racing and immediately tried to determine if what I had heard was the...

Over the long weekend I was touring a museum whence I glanced upon a thirtysomething woman and had to look again. There was a tiny arm coming out of her chest. I thought she must be carrying her tiny baby in a receiver (?) shawl wrapped around her, but did not inquire personally. I might have...

Sirtuins are enzymes which repair telemeres that deteriorate to cause aging. They are normally released in response to stress such as calorie restriction or low insulin levels, but sir2 can be stimulated by certain chemicals. Why is it unfeasible to take molecules like resveratrol (found in red...

Do human eyes grow? I was thinking this might be a reason why people think big eyes are "cute," if babies were born with the same size eyes they have when they are old.

The other day I was talking to my friend and we were just thinking about infinity. I used this analogy to prove how it is that we cannot 'see' some things. Lets take parrots, they can see ultraviolet I've read somewhere. But we cannot so we can't even imagine such a colour. It's beyond us. Such...

Inspired by a book review of: The Origins of Virtue: Human Instincts and the Evolution of Cooperation by Matt Ridley Ridley suggests that altruism is instinctual. Cooperation and even self-sacrifice appear to Ridley to have evolved out of a need for and the instinct of survival of the species...

From Veggies to Meat: Man-Apes become human The “man-apes” of Africa (australopithecines) was first discovered in a 1924 dig. This is considered by anthropologists as being one of the most exciting and enlightening finds of modern anthropology. The man-ape, which was first born perhaps a...

Hello! Anybody know any good pieces of work that will allow me to learn how to judge and react to another persons action or reaction to a particular event? Like how most human minds work in case scenario's and such. eh? Arigato, Chocobo

How exactly does your mind tell you from where sound is coming from? If you hear something next to you, you can tell if it is on the right or left side. I can't understand how sound compression waves could tell.

Does the decrease in atmospheric pressure with increasing altitude affect frequency of sound, such as that of a mountaineer's voice?

Need some help. How fast are the human feet traveling as they pass each other while walking and running? Thanks.

Is destructive behavior and benefiting psychologically as well as materially from other people's misfortune a part of human nature or an endless chain of role models that have been passed down from generation to generation to us today? Is our predisposition to compete (like in sports) and to...

Is this a valid thing for society to aim for? Would this do more harm than good? Technology is capable of taking us towards this.

are we anywhere near understanding DNA well enough to "program" a new species. say, programing a cell to grow into an animal with specific traits. I know similar things are done to a certain extent with genetically modified foods and animals (or on mosquitoes and flies); I know we know enough...

I've noticed that most animals have irises that fill the entire eye,but humans do not. Does anyone have an explanation for this? Does our sclera provide us something unique? What's the adaptive function one way or the other? This question has been bugging me for weeks. Thanks

Homework Statement How to calculate Lance Armstrongs power output/calorie consumption at 30 mph, 125 miles on level ground , no wind, 157 lbs plus 16lb bike? Homework EquationsWhat equations do I use? The Attempt at a Solution I'm 14 years old, where do I start

assuming a human being with average body type and health, how fast does a human being fall through water from the surface? what is the terminal velocity and what is it reached at? I've been trying to find answers everywhere but can't get a straight answer. These calculations would be useful...

is taxonomy an intrinsic property of life, or a human way to look at it? I think, especially with asexual species, that it is really a human invention, not an actual property of life. However, certain things fit well. what do you think?

I'm very interested in Experiment with high voltage that can show arcs. I also like to modify my swatter ( electric racket to kill mosquito/ flies), it is made in china. About the swatter: -It has only one diode at the secondary winding of the trafo, ithink this is for rectifying the ac...

Can anyone recommend a good textbook on A&P? I've seen a few on amazon but it did not quite have a feel to it. Also the Schaum's outline of Human A&P 2nd edition is over 10 years old This one https://www.amazon.com/dp/0805359095/?tag=pfamazon01-20 looks promising. Anyone have anything...

The use of the word ethics applies primarily to human situations, actions and conditions. Ethics described: http://www.iep.utm.edu/e/ethics.htm Along with this explanation of the word ethics I wanted to explore whether the word also applied to mechanical systems. Can a mechanical system like...

Here is the full question: Reducing human population, disregarding the difficulty, would be the most effective way to: - reduce pollution (air, water, soil, noise...) and - avoid depleting natural resources (fish stocks, oil, forests...) and - prevent extinction of living species, as well as -...

What is the fastest movement that larger scale human muscles (vs. cells) can make?

Human Life... Hopeless? Social morals for me are like driftwood being carried in from generation to generation - always changing positions, because it lacks the ability to control itself - like most humans I meet these days. I firmly believe that you should treat others the way you want to...

As far as I know Iron is used in many enzymes as the metal complex. Beyond this are there any biological uses for iron? All uses appreciated, ty.

i was just wondering abt this thing for a while... the total no. of human beings are increasing over the decades...which means some %ge of the Earth's matter is getting converted in the form of humans...suppose if the population goes on increasing, then theoretically there should be only humans...

In need of a human Dictionary! OK - I somehow have forgotten my favorite word. I have used it for years, but for the past week it has completely slipped my mind. To all you intellectuals - please help me remember what the word is. OK - The word is used in describing a situation of perpetual...

The ASME design competition is to design a human powered still... basically to use human power to boil water. We have a bike running a DC motor, producing a range of 100-250 watts (depending on pedal speed, we need to test this). To convert this to electricty, we were thinking of using...

Human interaction for personal gain of each individual.Is that the best summary of interaction between individuals.

Isn't the main difference between a computer and the human brain this: a computer uses a programme to process data but the human brain processes data and processes programmes which process data (to improve the data processing programmes and thus increase the brain's effectiveness and...

After reading the thread "how many watts does the human body use?" I calculated that my body requires 86 W of energy on average throughout the day. However, I am wondering how much excess energy my body radiates as waste heat (and blackbody radiation) ? Obviously this depends on a lot...

For a little I have been wondering about whether it is better for humanity to embrace human enchancement technologies. I can't come to any conclusion, because there seem to be valid arguments on both sides. Valid For: quality of life can improve because people see the world a little more...

Hello, Nowdays I'm getting confused about what happens when our perceptions are not the same as the other? As it has been discused before in this forum, Two objects can never be exactly the same as the other, which is completely logical. As a result the perception of two different human...

Do you think the human brain is best described a) Quantum computer b) Classical computer c) Semi-classical computer d) None of the above Cheers