Class Definition and 909 Threads

Just curious. Not sure if this has been discussed already, and I'm not sure what the phenomenon is called, but here's a description: I have a heavy gold class ring that I got from my alma mater. I put the ring face down on the desk, flat, and it can rest like that because the face of the ring...

Hi All, I have been taking a class recently, and for some reason or another, professor has chosen not to return neither assigned papers nor exams , although some homeworks have been returned. I brought it up and got a non-responsive answer to the effect of "we cannot just do that". I have...

Hi everyone, so I goofed. I ended up taking a pass/no pass one unit course at berkeley called the berkeley connect program for physics. The class was designed for physics majors to collaborate and talk about physics and do activities and such. So I ended up not passing the course and I'm...

Hello, I'm currently enrolled in a 6 week General Chemistry 1 class that starts in January. The class meets about 5 hours a day Monday - Friday. I took the introductory chemistry course offered at my college this fall, and I was able to keep an A+ without much trouble. What can I do between now...

I've written a poly phase merge sort using 3 "stacks" in C++. The key part of the logic is to merge from containers A and B into container C. It's expected for A or B to go empty with lots of data remaining on B or A. To deal with this, when A or B go empty, the empty container is swapped with C...

Hi all: I am a new member here with my first post. I am an adult learner trying to self-teach RF electronics. I have been working through David Rutledge's Electronics of Radio, while building the NorCal 40A transceiver. I am getting caught up on understanding the Class C RF power amplifier...

I am doing some experimentation, for a science fair. And I want to make sure I the laser pointer I use is Class I (conceivably, I may change that, but any class of laser can be used to replicate results similar to the double slit experiment correct?). Can anyone direct me as to where I may be...

I am planning on transferring to a 4 year university to major in physics. I am currently overseas and must take classes online. After an almost endless grueling search I was able to find a school that offered an associates program online that I feel is in the right direction for what I intend to...

I need help figuring out which formula to use to find what class lever I am using in a 10 ton log splitter circuit. The lever is 16 inches long and I am applying 100 pounds of force on the lever which is connected to a cylinder 5 inches in diameter, 24 inch stroke, and a 2 inch rod diameter. My...

I am working on a class presentation for my solid state physics class. I picked the topic of the Josephson effect. I would like to explain this phenomena in specific detail. However, the original paper and other material I have found quickly goes over my head as I have not been as far as...

Hi, so i have built some amps and power supplies before , even some real simple smps from a working circuit schematic but I have two high power npn transistors laying around and some old half baked circuit boards. I am interested can I make a real simple smps out of a 555 oscillator chip, and a...

hey guys I am at the point in my college career where i am about to fail my first class (intro to circuits) and I am an ee major (prob a bad start to my major classes). I am probably going to take it again next semester but can people chime in on how to come back after failing a class; the...

Hey guys! I am a 4th year Physics university student and I wanted some advice on what class(es) I should consider dropping. I am taking too many challenging courses and I really do need to drop one or two classes. Here are the list of classes that I have and a short description (and a personal...

Hello there I need help finding articles, journals, blogs, or newspapers relating to General Physics on the topic "One Dimensional Kinematics" P.S. Can you post some links or anything related to the topic Thank you.

Homework Statement [/b] hi everyone i just wanted to know if you guys think this is a wise decision to do throughout school. When my professors teach me a new subject/method to do something i usually disregard it and learn different methods producing the same answers most of the time sometimes...

http://oi58.tinypic.com/2d85aix.jpg above is an url to the stats major program at my school. In red are the two classes that overlap. Is it likely that the overlap is intended, or a typo? Do universities ever allow such overlap (an emphasis class overlaps with a core class)? They changed it a...

How well do you need to know it if you're a grad student? Isn't it nothing more than an "calculator" in that you don't "make" anything, just use it to solve integrals and such? Edify me.

Summer vacation is quickly wrapping up :nb) Time to post your 2015 fall class schedule and share with us what you're taking. Also post when your first day back is :smile:

Hi all I need help In the classes 6A and 6B, the total number of girls was 100% more than the total number of boys. The ratio of boys to girls in class 6A was 3 : 4 and the ratio of the boys to girls in class 6B was 1 : 6. If there were 8 more girls in class 6A than class 6B, find the number of...

I'm going from a community college to a 4 year school-a good one-for physics. I'm starting in the spring which is awkward because I won't have many options for physics classes to take while I'm there other than an honors intro E&M course. I had a really watered down experience with my E&M course...

I had an interesting idea in a dream, and unlike most dream ideas it still made sense when I woke up. When I'm teaching a large lecture, I know there are students who are afraid to ask questions because it feels awkward being that one voice in a hundred. My idea is to provide some sort of...

For our class project we are to collect some data from two populations, summarize it in table and graphical form, and conduct at least two different hypothesis tests that use different procedures and construct two different confidence intervals. I wanted to summarize my plan here and ask for...

Hello, I'm planning to light up a tile chess board with 64 LEDs (blue and white) set between the tile squares, and I was wondering if this Class 2 Battery charger output: 12VDC 900mA, would work to power 16 parallel sets of 4 LEDs + 1 ohm 1/8W resistor and a SPST toggle switch? The current...

Hey guys, I am dealing with a slight issue here, I am learning the basics of class F amplifiers. but I am not able to understand that whether the transistor in class f operation works in linear mode or current control mode? Also i am dealing this problems at power levels of 10W to 25W scales, if...

Which one do you think that is more efficient? I think that lecturers, from the fact of being humans, commit more mistakes than books when they give information because they can forget to transmit important details. Books are written carefully in order to be easy to understand, what's said was...

I have a byte array (each character consumes 4 bytes) of size 64 for example, Now I decode it using byte[] bytes={'z','\0','\0','\0','ý','\0','\0','\0','ó','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',...}; string...

Hello, I would like to teach physics classes online, but do not know a good website. Can someone help me?

Not sure if this is a feasible schedule.for fall. Our fall semester is 14 weeks. Cal 3 (multivariable). I am taking this one with a hard professor (had her for 2 other classess/lots of work) Physics 102 (introduction to electricity and magnetism) again hard professor and I am average at...

I found this one interesting: http://nextshark.com/one-comic-perfectly-sums-up-class-differences-in-society/

I was watching this video and I have the question, if using a bjt as a diode what is the difference (thermal characteristics) from a regular diode, I ask this because on-semi makes bjt's with diodes in them specifically for class ab amps, is their any benefit besides less thermal lag?

Mentor note: fixed formulas so they get displayed properly If we take the K-G eqn and the following term for the wave function $$( \partial^2 + \frac{m^{2}c^{2}}{\hbar^{2}})\Psi =0 \\\\\Psi = Re^{-i\omega t + i k_{i}x_{i}}$$We worked through to this ##\hbar \omega = \pm \sqrt{\hbar^{2}...

I need to choose a topic for a class project involving fluids and/or thermodynamics. It will essentially be a feasibility study on some proposed improvement to an engineering system (of my choosing). For instance, it could be an improvement to a power plant component that increases combustion...

Homework Statement There are x boys and y girls in a class(Class A) The girls outnumber the boys by 4. They join up with another class(Class B) in which there are twice as many boys as girls. Class B has 3 more boys and 5 less girls than class A. Which one of the following systems of equations...

Hello everyone, I have a discrete class D project that I need help with but since I'm not an analog guy I got a problem. So far I got everything set up and the discrete class D works perfectly. But only at maximum of 6 volts otherwise the Transistor M3 gets really hot and burned, how do I solve...

Ouch! http://metro.co.uk/2015/04/01/when-physics-lessons-go-wrong-they-go-very-wrong-5130079/ Anyone has any follow-up info on this? The YouTube video has a title that implied that the teacher lost his job for this. There's also confusion on the unfortunate person who got hit if he was a...

Hello, I am a current freshman in HS. Sophomore year I am registered to double up in math (AP Stat/Precalc) and am taking Honors Programming, the prereq to AP Computer Science at my school. I am also taking Spanish 3 next year, as well, as I took Spanish 1 for HS credit last year in middle...

Homework Statement I'm kinda lost in the concept of conjugate elements in group theory. It says that a element "h conjugate by g" is: g-1×h×g = hg Then it says that if the group is abelian h = hg Homework Equations Abelian group: a*b = b*a The Attempt at a Solution I don't get why the fact...

Well, I'm a Computer Science major, and I'm trying to figure out where in my area I should take Calculus over the Summer. Here are my issues. I've been taking most of my Classes at Richland College. However, they have policies I don't care for regarding Precalculus and higher classes. They...

Homework Statement How do I create an instance of a class in a method? Homework Equations None The Attempt at a Solution I am a bit rusty whenever I think of instances. I always think of main method and objects when I see instance which gets me confused on what to do with the following...

Homework Statement How can I return a new class object in an abstract class?Homework Equations None The Attempt at a Solution Suppose I have an abstract class named Animal (there are many other animal types that are made as classes). In this abstract class it has two methods...

Homework Statement Suppose I have an enum class named Faction and one of the constants is named DAUNT. I created a Daunt class of the enum but how can I pass in a DAUNT faction type in for Daunt?Homework Equations None The Attempt at a Solution public enum Faction { ALMIGHTY, AMBITION...

I'm a 2nd-semester freshman taking my first upper-level class (partial diff eq) and I'm really struggling. People always ask me what I'm doing in that class as a freshman and I answer by telling them I'm an idiot and a masochist, which is true. I've spent most of my time and energy on that class...

Hi, I need to make a UML class diagram for a hotel billing system then implement it in Java. I'm quite new to UML so was just wondering a few things. The scenario is: 3 different types of customer - corporate, group and individual Corporate customers are local companies employees with a...

I am a volunteer teaching a STEM class once a week to a class of eight elementary students. From this page http://tbpmindset.org/modules/SECME/Rockets/Rockets_Calculations_Manual.pdf I use this equation for water flow out of a water rocket m = nozzle_area * discharge_coeficient * SQRT( 2 *...

All my life the approach has been as follows: In math class I learn the rules and almost always deal with purely numerical problems. In physics class I apply the things learned in math class but this time our quantities have units. Now, once the equation is well put and has dimensional...

Ah ha! So I was looking through the physics classes I will have to take and noticed a lot of topics dealing with atoms and the like. Would it benefit me to take the first installment of basic Chemistry? I don't want to take the lab portion just the lecture section if it would be a tremendous...

I was wondering if I could get you guys advice on something. My school only offers fluid mechanics every other Fall. This spring I'm taking physics 1, calc 2, and chem 2. In the fall I'll for sure be taking physics 2, and calc 3, I could take rigid body mechanics and experimental techniques, but...

I honestly am split down the middle on which class schedule to choose for the upcoming semester. I feel like both would prepare me for grad school with option II a little bit more but both are equal in my eyes. Just wanted to get some opinions on what you might think. Option I: -Intro to Graph...

ok. so here is the plan. there is a class i want to take. but before i can take that class i need/want to learn bunch of stuff. The classes has bunch of pre-requisite classes that i want to learn. I want to learn them efficiently(dont confuse this with me rushing, if it takes time, so be it but...

I am learning both languages for coming certified exams :D I have a code line in C# like this byte[] resource=...; BitArray data=new BitArray(resource.ToArray()); I would like to do this in C++ (I am using dynamic_bitset of boost - don't know if this a bad choice) std::vector<unsigned...