psi20

Yeah, I think it'd be realistic if there was a civilzation with a different philosophy, code of ethics, etc. as our own. We, the U.S., are like individualistic capitalists for the most part. Obviously we're not going to be saying, "Hey, I'm going to give you this new t.v. I made for free." However, a society under other circumstances and beliefs would. Maybe a society where people consider everyone else a family member because we give things for free to our family members.

Biology is a science where almost every fact has its exceptions. However, the study tips for biology are applicable to school, life, and everyday events. 1) Know the terms of the topic you're studying about. This could mean memorizing key terms through flash cards. If you don't know the words, you can't know what you're talking about. 2) If you're studying out of a textbook that has a summary of the chapter or key points of the chapter somewhere in the chapter, you should read it before and after reading the actual chapter. Reading it before the chapter gives you a general idea of what you're going to be studying about. Reading it afterwards reminds you of the general idea. 3) If your class has labs, read the instructions carefully and draw diagrams to remind yourself how to do the lab. If the lab comes with lab questions, think about these lab questions. Make a pre-lab hypothesis based on what you know. 4) Ask your teacher for help if they give help after school or at lunch. Biology can be pretty cool. I remember one project my teacher assigned called the Bug Project. I collected, classified, pinned, and mounted bugs for display. It was pretty cool since I got to go to the parks and enjoy nature for a couple of hours. You say that your teacher announced your grade. I hope this wasn't aloud so that the whole class could hear. If it bothers you, tell your teacher that it does. I don't think that teachers can just tell your grade to anyone, at least that's the way in my school. If you got the highest average in your math class, it's obvious to me you're smart.

Anyone got any good besides wikipedia ( good meaning simple to read for a simpleton like me, concise and to the point for a simpleton like me, and simple to read for someone with a short-term memory like me) sites regarding factors affecting the physics of falling dominoes? These factors may include but are not limited to: forces, vectors, gravitational potential energy, kinetic energy, momentum, energy conservation, or energy transfer. And, if you have any information pertaining to the physics of falling dominoes, whose surfaces are on parallel planes and are a constant distance away, could you post them here?

I think the government once did try to ban alcohol, right? There'd probably be a similar reaction. I agree, however, that all drugs that directly affect more than one person should be banned. I hate sitting next to someone who smokes. When I was a kid, I used to inhale smoke from my dad since I didn't know it could kill me. It's pretty bad to know you're kids might get addicted like you, or someone else's kid, etc.

I'd imagine several different societies with money not existing. It also depends on the number of people that exist on the planet. I'm going to think of a society with 7 billion people on Earth. One is where people are all isolated into clans and local alliances with neighbors and family, millions of languages exist, thousands of religions, the average person is a self-sufficient farmer, people don't travel out of a 20-kilometer radius, 5 billion people die in the first 10 years (starvation and disease mostly coupled with war), 10 billion people are born in the first 10 years (no more tv's, computers, etc. what else do you do for fun), no trade, a grumpy group of people we are; within a million years, some people will be huge and the adults will be 8 feet tall due to surplus of food and resources, others will be 4 feet tall due to small resources. *Sorry for the huge run-on, but I hope you caught the ideas rather than the grammatical errors. Another society is a group of unified people who are socialists, there is no government, there's a universal belief that people should be altruistic and help each other, the universe is cyclic, meaning it repeats, fate exists, planes are built for free, cars are built for free, people give each other food when there's surplus which there would be due to the increase in technology from the international interaction of peoples across continents and oceans, computers would exist, 3 billion people die in the first 10 years due to disease starvation war, 10 billion people are born (surplus of food, people are close, travel around the world exists, you meet new people) this seems to be a perfect place, however it comes with a twist the travel causes an extinction in a group of people who aren't immune to common diseases that the tourists have, derranged people would figure out the best way to kill isn't with guns, but with contagions, computer viruses would spread if they couldn't be stopped, people become lazy because they know they would be taken care of, warfare would be periodic with more casualties than the first scenario. In this society, the first 100 years are successful, the next 100 are in decline, the next 500 are chaotic, the next are successful, etc. fueling the belief that the universe is cyclic and history repeats.

Question: I saw on a Nova special of Origins about Mars once having water, but Mars' inner core cooled down so much it could not generate the shield against the Sun's solar rays. So it goes. But how far can the solar rays penetrate down into? Do these rays, for example, go deeper than 10 miles under? If not, I expect that there may be carbon-based life on that planet that evolved so that animals living underground exist. Like the writer who wrote 20k Leagues Under the Sea (Jules Verne?) imagined Earth's innards would be like, Mars might have layers of life. Europa would be my second guess. Why? All the points are mentioned already, but another reason why we'd find life on Europa is because, as of right now, 40 % of this poll believe it will be. We all are creating the future. If you think we'll find life on Europa, we'll send objects/people/etc. there to find life before we go elsewhere out of the solar system. I just think we'll find life on Mars first because it's closer and about 20% of the poll think so.

Do you think non-violence and Gandhi's methods are effective today in the short-term? long-term? Is it more effective with many people rather than one on one fights?

Chromosomes form when the cell begins to divide. At other times, it's chromatin, which is a "soup of DNA," as my teacher explained. In Prophase, which is before Mitosis, chromosomes duplicate, which is why you get 2 pairs of chromosomes. In DNA, adenine goes with thymine, and guanine go with cytosine, so having one chromosome allows it to make a copy of itself from the base pairs floating around the nucleus of the cell.

Just curious, but what other kinds of "lighter" are there?

Lighter as in if concealed in a box, which would float on top of the other. Maybe the term would be lowest density.

and carbon dioxide too?

Is methane gas lighter than oxygen?

Actually, I'm trying to not use that kind of raft. I did that as a control experiment to see how many pennies I could make it hold. Mine, very crudely made, held 103 pennies, so I'm estimating that a hemisphere could hold 125 pennies easily. The raft I'm trying to make probably isn't going to work with paper. It is a triangle sides the length of a little more than your middle finger. The sides are going to have air pockets and then I'm going to glue them shut. The left over paper makes 2 layers of floor space underneath. The floor is made of parts. These parts are folded so they fold either upward or downward. Hopefully this connected to the triangle sides are not going to leak water in. What inspired me is the escape from Alcatraz. The three escapees made a raft that held them out of raincoats! A show called Mythbusters showed that it was possible to go from Alcatraz to the Marin Headlands using the flow of the westward current, contrary to popular belief about the escapees heading to Angel Island.

Just for fun. Or was that a rhetorical and philosophical question?

I'm building a paper raft using 1 sheet of notebook paper and glue. I'm going to put one penny at a time onto the raft to see how much pennies it will carry before water leaks in. What's the most amount of pennies you've heard of being put onto a paper raft?

Hey, I think I figured it out. Insert the numbers 0,1,2,3 down a column. When you graph, it asks you for a data range and series on step 2. Click the Series tab. Look down to where it says Category (X) axis labels. Then you can type in the numbers you want, like 0,1,2,3. Then you have graphed the line segment from (0,0) to (3,3) Unfortunately, the shape of the graph doesn't change with the change of the scale on the x-axis. If you typed in 0,6 graph wouldn't change.

thanks, that was a roadblock

Ok.

What does it mean by : Let I be a nonempty set of integers that is closed under addition and subtraction. Then I either consists of zero alone or else contains a smallest positive element, in which case I consists of all multiples of its smallest positive element. What's "closed under addition and subtraction"

Yeah, it was weird. I was not asleep but was still dreaming. I could hear the radio station, but I could see myself as a rabbit falling into a hole. Pretty weird that I'd be thinking I was a rabbit (maybe the song was about rabbits?)

One of the last times this this happened to me with a dream where I was a rabbit falling into a hole . Maybe the last segment of the dream itself makes you feel like you're falling. Interestingly enough, I went to bed less than 15 minutes before I had a dream. It usually takes me half an hour to fall asleep. What would that mean regarding my state of mind at the time? Wouldn't it mean I was tired?

How do you plot the point (0,0) using a line graph?

I'm still lost. I don't mean (3m/s)^2, I don't mean 3m/s, I don't mean ((3m)^2)/s, but I do mean 3m/(s^2). Using your method with square roots, I still get 38880km per sq. hr . a/b does not equal sqrt a / sqrt b , but you can take a square root and then square and it'll be equal 3m/(s^2) ==> sqrt (3m)/s = sqrt (.003km)/s * 3600s/h = sqrt (.003km) *3600/h <==(.003*3600^2 km) / (h^2) = 38880 km/ (h^2)

123rock's answer helped me a lot. I forgot to ask what's the answer as well as how do you do it. Why would it become km/hr? There may have been confusion using my notation I think. I meant it to be acceleration as in 3 meters per square second. But now I'm confused. 3m/s^2 * 1km/1000m * (3600s/1h)^2 and I get 38880 km/h^2

Speaking of the random number generator, my friend and I tried that. We had a 50/50 chance of getting what number it was (1 or 2). She did this for an hour or so. She had an amazing result far higher than 50 %, or maybe it was around 60% and the amounts of hits far exceeded the amounts of misses making it seem like it was way higher than 50%, but one thing I'll remember for sure is that she had 10 in a row.