I would like to know the specific name for the bar where you type the internet addresses. Also, what do you call the list that opens down when you type something that you've already visted in the bar? Thanks.
The United States and globally. I've found a couple of stats but they all seem to be somewhat different. Should I choose the one with a higher avg. given that it seems reliable?
Even better, can someone please find stats that show how many people are addicted to technology in general? Should...
Can someone help me find credible stats on the avg. number of hours people spend watching tv & playing games?
I need credible data that I can cite. Please provide the URL so that I can refer back to it.
Also, any other statistics on how computer games/usage, TV, or technology on how they...
No, but I have to take SATs in my Junior year and I need to prep badly. Also, some people say I might get deferred by top colleges if they don't have my chem grades by the time I apply.. Hmm.. I guess I will try emailing them.
And yeah, so what if I'm overly worried about my schedule?? These...
I'm currently a sophomore and I haven't taken any course in chemistry yet. Our school only offers up to chemistry honors but both the honors and regular classes are extremely hard to get an A in (almost the same difficulty). Not only that but the teacher doesn't teach and the...
Best Chemistry Book?
What is the best chemistry book out there with lots of practice problems and that allows a beginner to comprehend material the most? It should include all of the basic topics that a college course teaches. Thanks.
How do you find the derivative of f(x)=5?? I got 0/0... but shouldn't there be no derivative then? I know that I can visualize the function f(x) because it is just a straight horizontal line and there is no slope at any point on the line... but how do you solve it algebraically so that it...
Isn't \sqrt{2}^{4} equal to 4?? How come when I plug this into my calculator it gives me the number:3.999999999996 , which is very close to 4 but isn't?? Is there something wrong with the settings of my calculator?
Yeah I'm going to take the course next year but I don't know what I should start reviewing. Yeah, I really want to go to a good college and getting a C or even a B isn't something that I want. Most of the people who have As are people who have all of there time to study since they are lower...
Is self-studying for AP Chemistry even possible??
I'm planning on taking Chemistry honors and they teach AP Chem material. However the teacher doesn't teach so I basically need to self-study for the hard tests, labs, and quizzes he gives frequently. Is it possible to spend only an hour each day...
What are the best Text/Review books for: Chemistry Honors, AP Calculus, AP Bio, AP Enviornmental Science??
I'm looking for good textbooks that are easy to comprehend and gives you a lot of practice and allows you to think a lot. Likewise, I would like simplistic review books that go right to...
Oh I'm definitely going to take BOTH Chemistry Honors and AP Computer Science. I just don't know which I should choose for my hardest and most stressful school year, my junior year. Should I take the harder one in my junior or senior year?
AP Computer Science A VS. Chemistry Honors<-- highest level chem course
Which class should I take Junior year? Which do you think will be the most beneficial for someone who is planning to apply to top UCs and Stanford (engineering/science major).
Here are the pros and cons that I think...
So do you think it is better to take a class like AP chem junior year or senior year?? Also, colleges do care about your grades senior year right? Generally, do people have harder courses scheduled for junior year or senior year? Also, if I take Chemistry Honors I would really have to worry...
Here's the deal: I'm currently a sophomore in high school and I need to choose my classes for junior year. I've made a thread like this, but I'm addressing a newer issue here. I'm taking AP Physics B this year and that is the only AP/Honors class I have taken so far.
Here's what I've...
So how do you guys review everything? With everything else going on in school how do you find the time? What do you review, from where, and how what methods do you use? Do you review 10 min everday? 1 hr per week? What is the best amount of time I should spend review so I can permanently drill...
Yeah I'm practicing right now and I remember many things, but usually I'm skeptical about if I doing it right or not. I would like some sort of reference that I can check my work with. That way I will have a better chance of remembering the correct information.
What is the easiest way to review math concepts, trig identities and such? Are sparknotes charts good? Does anyone know of any good book or review sheet that gives you many of the useful laws, formulas and what not? Thanks.
How are you suppose to get an A if the teacher doesn't curve anything, doesn't teach, gives hard tests/quizzes that are unpredictable? He doesn't even give you a study guide for the tests.. How do you know what to study?
oh yeah my teacher said that we will be learning shortcuts at the end of the calculus course. Basically you have to do everything the hard way before you can learn the easy way. What if I learn all of the shortcuts first? Would it be bad for me?
oh okay I see now, thanks! Also, do you need to use the limit process to find derivatives every time? Are derivatives basically general equations of the tangential slope for the function?
So just using f(x) and x gives you a general equation for the entire graph? That's interesting I've never though about it that way before. Is that the only reason for being able to use it to find the slope at any point on the graph?
I also find the derivative very perplexing. How do you use the equaiton derived from the limit of the secant slope to determine the slope of any point on a graph? I know that you just plug the x value of the points into the equation but.. you know what I mean? Just how does that work... The...
Btw, I think the beginning of calculus is soo interesting. I think the slope of point of tangency is awsome. Using limits to find the exact slope and it is pretty simple if you think about how it works. Is calculus basically just all of this, finding "rates of change of functions." Will it...
Where are there so many different ways of writing the derivative of the function? Which one is the most commonly used by college professors and that looks the coolest? Probably \frac{dy}{dx} right??
Thanks a lot for your views and insight on my situation. I'd love to have more opinions and comments about what choice I should make. Community college teachers can be bad too right? If I don't know what they are like, I may end up with one of them myself.. and I don't think they curve anything...
I am talking AP Calculus next year. Our school doesn't offer Physics C. I have 1 class option left and here are my only choices: APES (I like learning about life in general, had a great time learning Bio this year) , AP Stats (seems pretty boring to me), AP Comp Sci (wanting to take this senior...
Generally, should junior courses be more rigorous than senior courses? I have the following senior courses mapped out:
AP English
AP Econ
AP Amer. Govt.
AP Comp Sci.
AP Music Theory (mabye)
AP Stats (if enough people sign up for it)
Since I'm planning to take Chemistry Honors in my...
I'm planning on taking 3 of the following science courses next year:
Chemistry Honors (Highest Chem course at our school)
AP Biology
AP Enivronmental Science
This year, I'm taking AP Physics B and I have A's for both semesters.
I also have some other choices- AP Stats, AP Music Theory...
I basically self studied thermodynamics and it took me about a week to do so. I was cramming for the AP Physics B exam. Isn't chemistry more conceptual though? Are the situations very hard to visualize? What is the difference between organic chemistry and regulary chemistry? The book that we use...
Well another option for me would be to take a organic chemistry class at a community college but I'm not sure how the teacher is over there and the class over the summer is only 4 weeks long (4 days a week 3 hours per day) so it is going to be really fast paced and I'm not sure if I'll like that...
It's not an AP class, we only have honors chemistry at our school and yes, only one teacher teaches it. Honors chemistry is the highest chem we have currently so I guess a good side would be that I don't need to take the AP exam.
Also, can anyone direct me to links of good chemistry tutorials? Having free online tutorials can somewhat substitute a teacher's lack of teaching in class right? What are the best tutorials for Introduction to Organic Chemistry preferably following Zumdahl's books.
Honors Chemistry, Is it essential for getting into good schools??
I'm in High School. I'm planning on majoring in engineering or science related fields and I don't know whether I should take the only chemistry offered at our school, Honors Chemistry. The only thing is that there is only one...
I've read some informational articles about building telescopes and it says that all you need is 2 magnifying glasses? Is it really this simple? If so, I'm going off to the store to buy magnifying glasses. =] Does anyone know where they sell cheap ones at? Thanks.
Everyone in our class needs to build a lens optical device such as a projector, camera, copier, telescope, microscope, solar cooker, etc. We will need to include a ray tracing diagram. Has anyone ever made a simple device with lenses? What do you think will be the easiest and cheapest? Thanks
If a problem asks you to find the electric field at a certain point, do you add up the field vectors as if they were forces on a positive test charge?
For example:
Can someone explain why the entropy of a cyclic carnot engine is equal to 0?
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
Also in the refigerator section, why is Q_h coming into the heat reservoir when Q_c is the one being transferred??
Thanks Tim! What is this objective asking?:
Relate the heats exchanged at each thermal reservoir in a Carnot cycle to the temperatures of the reservoirs.
Do you use the first law of thermo to relate heat and temp?
Thanks for the help guys. I'm on the Carnot engine right now and it all seems confusing to me. Should I just skip this section? All I know is that it is the most efficient engine and that the processes are: 1.isothermal,2.adiabatic,3.isothermal,4.adiabatic. Is there anything else important that...
Okay, so how do you know when to put a delta symbol in front of a variable? For example, U=\frac{3}{2}nRT however, it can also be written as \Delta U=\frac{3}{2}nR\Delta T --Change in Internal energy of a system
I'm pretty sure that this isn't the case for many equations such as: \Delta...
Another question: So if Cv=3/2R, then Cp=5/2R right?
So can you express heat as:Q=nC_{p}\Delta T=5/2nRT ??
So Q=3/2nRT when the process is isochoric/isovolumetric and Q=5/2nRT when the process is isobaric, or when the pressure is constant?
What the difference between: 1) Compute the maximum possible efficiency of a heat engine operating between two given temperatures. 2) Comput the actualy efficiency of a heat engine.
I've only learned this equation so far: e= 1- \frac{W_{eng}}{Q_{h}}
Also, what are the easiest ways of...
Does the internal energy always depend only on temperature in an ideal gas? Would the equation U=\frac{3}{2}nRT tell us that? are there any other equations?
I'm also confused with the area within a cyclic curve on a PV graph. Does the area within the curve represent the work done ON the...