Class Definition and 904 Threads

Has anyone taken a an undergraduate course in plasma physics? If so, what text did you use and how did you like it? I need a text for plasma physics because: 1) I'm taking the course next semester and the professor doesn't use a textbook and he's also apparently a horrible teacher, so I'm...

Okay...I have to decide today (due to uncontrollable circumstances) amongst the following classes: Digital Fundamentals, AutoCad Drafting class, or Introduction to C Programming. Which would make me more valuable to employers looking for an intern? Digital Fundamentals deals with truth tables...

What is the difference between class and set? I have seen statements like "Let M be a class of subsets of X...", and it seems to me we can still do everything we like as though M is a set, and we are just avoiding the word "set" and replace it with "class". I am aware of the paradox "the set of...

I am a dental student. I have noticed that dentists tend to say that Class III levers (eg. the human mandible) are "the least efficient type of lever." I told my friends that this was incorrect, because there is no more inherent energy loss in a Class III lever than I or II. The next day my...

I have to do a demonstration to show convection in class. I was wondering what could be a simple experiment to set up in which I could show that convection exists. I've had a few ideas and am wondering if you could come up with any. :shy: Thanks, lcg

I actually join an evening class to study about drugs, and today a classmate asked me to explain how our immune system reacted when we took some medicines to cure fever, for example. You know, I am not young any more, and it is really shameful if I told that young pretty lady that I knew...

Hey there! I need to make a battery powered dragster for my physics class! Here are so requirements... Only AA batteries, but any number is allowed. Only commercial motor and gears are permitted. Everything else on the car must be materials not meant for their use (ex. car wheels must not...

I was going to take Differential Equations in the coming fall but decided to take it over the summer. I now need to take something else in the fall and I can't make a decision. I am a chemical engineering student it will be my 2nd year this coming fall but I have already finished all my...

hello. i have to build a "quake tower" for my high school physics class. it must be made from bolsa wood and be able to hold something like 10 pounds and be put on a vibrating table and not collapse. has anyone ever done a project like this before? do you recommend any specific designs? any...

I am taking linear algebra right now, honours version. and i wonder if it is considered a real math course, i.e. is it really abstract or not, or is it like the baby stuff? i.e. the teacher gave in class a proof by induction that eigenvectors from distinct eigenvalues are independent. and so...

i am building a human powered boat for my physics class. does anyone have any design tips or powering mechinisms that could be of use? please help me!

I have not gone to my math class in 3 weeks. Just got out of the midterm, professor handed out answer sheets. I passed with flying colors. This should not be possible. Between this midterm and the last one i have not gone to class once, and i spent about an hour reviewing last night. Really...

Hey... my teacher has recommended me for AP English next year and was wondering if i am upto it... i wanted to know if Ap english requires you to have excellant writing skills ( which i don't possess...im an average writer.).. What are the topics covered in an AP english class? do they focus a...

In my physics class, we recently got assigned a project that deals with moustraps. More specifically, we have to use two (2) mousetraps to shoot a starburst the farthest distance possible. You can only use the mousetraps tho, what do u think would be the best way to harness the most energy of a...

A mass of 0.39 kg connected to a light spring with a spring constant of 22.2 N/m oscillates on a frictionless horizontal surface. If the spring is compressed 4.0 cm and released from rest, determine the following. (a) the maximum speed of the mass (b) the speed of the mass when the spring...

I'm a grade 12 student and have been given the task of teaching our algebra and geometry class for a day :smile: . There are absolutely no restrictions on what I can teach about. It does not in any way have to be related to algebra or geometry, just mathematics in general. What I really need is...

Class starts in T-2.5 hours...the suspense is killing me!

Well I was learning bits about Electromagnetism in my physics class and we were learning about transformers and thought it was kind of neat. I was just wondering why transformers use alterneting current and why power must be delivered at such high voltages across transmission lines? Also, how...

Hello all I know an interface is even more abstract then an abstract class. Let's say I want to make an interface called Furniture that implements two class called Chair and Table. What does this exactly mean? Can someone please clarify this? Thanks public interface Furniture { int...

Here are all the formulas I have learned in my pre-AP physics class so far, I just finished the 1st semester: They are in no particular order. F_c = \frac {mv^2}{r} a_c = \frac {v^2}{r} F_F = \mu * F_N C = 2 * \pi * r V_f = V_i + at V_f^2 = V_i^2 + 2ad d = V_i * t + \frac...

hey.. currently reading macbeth in my english class and needed to find more info on Fleance, Banquo's son... i can't find any major characteristics or his importance in the story...all i found out is that he fled away after banquos death and that's it.. Any help is appreciated.. thanks

hey.. currently reading macbeth in my english class and needed to find more info on Fleance, Banquo's son... i can't find any major characteristics or his importance in the story...all i found out is that he fled away after banquos death and that's it.. Any help is appreciated.. thanks

Much has been said recently about outsourcing overseas the American workforce by companies such as Wal-Mart. Beyond charity and manual labor, Third World consumerism soon promises to create a reciprocal market for goods. American businesses would be wise to establish fair market practices and...

Here is the problem... Consider a row of isotropically emitting streetlamps 15m apart. On a foggy light, an observer standing next to the 1st light notes the radiation flux from the 2nd light is 5.0 times that of the 3rd. The last streetlamp definitely seen is the 12th. If the air+fog...

Well, I avoided this class as long as I could... and now I am stuck with it! I am in a beginner class, but the course is way too fast, and I can't figure out what the teacher is talking about. We are dealing with graphs and 'Straight Line Motion' right now, and I am so lost. I have a test...

Any suggestions? http://www.cnn.com/2004/TECH/space/10/05/space.star.reut/index.html

if a physics professor substituted for a 2nd grade class and the student from left to right were like this :smile: :smile: :mad: :approve: :bugeye: :-p :cry: :rolleyes: :biggrin: :confused: :rolleyes: :redface: :wink: :frown: :cool: :eek: :devil: :blushing: :zzz...

I should have mentionned it, but I rather think about it first. Suppose f:A->B and g:B->C then g*f:A->C That makes sense. Then they talked about f*g! Is this possible? Think about it. If f has domain A, and g has range C, than how can f(x) equal anything, since the range of C is...

My first physics class in university comes in.. 15 minutes! Better get moving... :biggrin: Still need to get my books...

It has been at least 5 years since my last math class and I am kinda struggling. The question is: Use the intermediate value theorem to show that there is a root of ln x = e^-x on the interval (1,2). Find the correct root to 3 decimal values What i have so far f(1) = ln 1...

OK, my new professor in a microprocessor class asked this question, which I believe to be slightly open to interpretation: If we needed and AND gates function, but had no AND gate, what single chip could we use to take it's place? Now, this question was verbal, and he sent us home to...

dear friends.. i am class 12 cbse students we are supposed to do an investigatory project on resistance and resistivity the project has been completed ... but we need to have around 10 - 12 pages on relevant information on resistance..i wud be grateful if u cud hel p me collecting some...

i am learning about modulo and congruencies in class and i am seeking some help. i need to find a complete residue system mod 11 consisting of odds only. show that every pos int. n, 7^n congruent to 1+6n (mod36) find the least residue of (n-)! mod n for several values of n. find a...

I'm not sure that this post belongs here, but I'll give it a try. I'm having a devil of a time :devil: trying to figure out why my program won't work. The assignment was to create and array class consisting of: A constructor that takes and integer for the size of the array A constructor...

hey guys what's up? just recently I've been working on this potato battery thingy in chemistry class and the highest i can get it is 15 volts. i knwo there are a lot of variables involved but are there any suggestions that you might think would help achieve a higher voltage? i was thinkin of...

I once read that tensors may be considered a special class of a more general class of entities called 'holors.' It was just a parenthetical comment; no further information was supplied. Can anybody fill me in on this topic? In what sense is holor a generalization of tensor? What branches of...

Went to an amusment park yesterday for physics class. Went on a ride called the "hellevator" where you sit down and it shoots up a certain distance then let's you free fall. My question is if the acceleration upwards occurs in the first 5 meters how do you figure out that acceleration?

When to an amusment park yesterday for physics class. Went on a ride called the "hellevator" where you sit down and it shoots up a certain distance then let's you free fall. My question is if the acceleration upwards occurs in the first 5 meters how do you figure out that acceleration?

show that the polynomial g(x)=(x^2 -5) (x^2-41)(x^2-205) has a solution modulo any integer n∈ℕ.

I know this is my only post but i really need help...I don't really understand any of this and i am not doing well in my class ... I would be willing to pay you (only one person if you can help me out tonight with all the questions, pacific time) or you can just help me out for free and post the...

Welcome to Java Class! We're going to learn a bit of Java here, one bit at a time, using real world examples to understand what we're doing. My aim is that all of the Java posted here is executable, so you can try it yourself. First, before you can make use of any Java programs, you'll...

[FONT=Century Gothic]Okay, going completely crazy here. I'm in accelerated physics and we just got assigned the gravity car. The way its supposed to work is like this-- a weight is supposed to be dropped from a certain height and its supposed to propel the car forward (GPE converted into KE and...

This heated debate on animal testing happened in my English Class the other day. A large number of girls are against it. I personally am on the fence. So what's your take on the issue?

How many people bought class rings from high school? I always thought it was a waste of money personally, just like letter jackets. Who actually wears them out of high school?

C++ Matrix Class :( I need a very good C++ Matrix Class...but not finding any... :( Can you help me ?

I'm trying to do a lab for my physics class. It wants me to calculate the weight of the water displaced when I put a 500-g mass in a cup of water. I know the volume which is 59.0 ml. And I also know that the Buoyant force i s 0.56 N. I thought that the Buoyant force equals the volume of the...

This question is making me angry. I think I know the answer but I have some co-workers that disagree. Q. Sally is the 50th best student in her class and the 50th worst. How many students are in her class? A. 101, 100, 99, 50 I believe the anwser is 99

Hello, I just started doing groups in my algebra class and I am struggling with the abstraction of it as usual. Here is how my class defines a group: A group is a nonempty set G with a binary operation "o" such that for all of x,y,z which are elements of the group the following holds...

hey. i am in a physics honors class, and we just had a test. each test has 9 questions, 8 which are decent, and the last one is the "death problem" this problem is worth 20 point, double of the others (if you did the math, if you get die on the death problem, the highest score possible is...

This is my second academic day in university (1st academic day is when the first class starts). I have some question, in which your opinion would be welcomed! 1) Sound Volume: A female lecturer talked with a very low volume. I already asked her to speak louder. She said "OK, I'll speak as...