Practice problems Definition and 51 Threads

I'm in my Probabilistic Models in Biology class, and the professor just brought up the subject of double integrals. I haven't done Calculus IV since fall of 2016, so naturally, I kind of forgot how to do integrals with more than one integrand. Can anyone recommend me any (hopefully, free) pdf's...

Hey guys this isn't so much a homework question as it is a learning question. Any good resources online that could help me practice calculating current/voltage gains as well as input/output resistances for BJT and MOSFET amplifier circuits? I can't really find any resources that give me problems...

What are some books on mechanical oscillations for olympiad?(especially problems, not theory)

Hi everyone, I am trying to learn the underlying number theory concepts behind cryptography, and I was wondering if anyone knows of good resources for learning about number theory as applied to cryptography. I was hoping to practice writing proofs as well. Thanks!

Can someone recommend me some books that have practice problems for algebra with answers ?

Where can i find some worked out practice problems ?

Does anyone know where i can find some practice problems of Rational Equations ?

Hey all, I am working my way through a couple of emag books (Griffiths, Jackson, and Schwinger) and I was wondering if any of y'all have suggestions for problems that you thought were particularly physically insightful or useful. Cheers, IR

Would you please introduce me some textbooks that offer multiple choice or true-false questions at the end of each chapter so I can practice before my final exam? Basically, that class I am taking right now cover many central topics in Undergraduate Probability course such as: • Moments and...

Hello, I will take Classical Mechanics I (upper division) course fall of 2017. I have not seen Mechanics material since fall of 2014 and would like suggestions on how to review the concepts prior to taking the class. I was pretty good in that class and do not need to "re-learn" anything per...

This will be a long shot...Does anyone know of an online resource where I can get practice problems in naval architecture. Specifically, on ship motion? Thanks

Hello everyone, I found various physics problems online randomly and looks like I can use it to help me study for tests and was wondering if you guys can provide a simple solution/explanation to it. It would be a great help, Thank you! Conservation of Energy: a. If Spring 2 can only compress...

Hi PF, I'm trying to learn both special and general relativity, I have read all about them, learned the basic math needed, but that was all without "enough" exercices to completely understand the theory, so I need problem books that are purely or mostly about problems about special relativity...

Sorry if this is not in the correct section. I have an engineering economics exam this week. I'd like to know if anybody (particularly professors and/or tutors) know of a website or have a document they could share with me with a few practice problems. I have attached a PDF document with the...

Homework Statement The problem goes like this: The sum of 2 numbers is 25. If 2/3 of the smaller one is 2 more than 1/4 of the larger one, find the 2 numbers. Any hints on how to start off this one? What should I let x= be? When i attempted to solve this i let 2/3x = the smaller number and...

5. Point Q is 3m above and 4m to the North of Point P. Ignoring friction how much energy does it take to move a 5kg sack of potatoes from point P to point Q? These are multiple choice questions of the exam, so in the mark scheme it only says: A, B ... The question paper can be found...

Salve, Can anybody recommend a book which has lots of differential practice problems?Or a similar book for Laplace transforms? No explanations just the answers and the problems,simply for practicing. Thanks for any help.

Hi there, I'm currently taking Complex Analysis but do not feel like I have enough practice problems or course material (books, websites, Youtube channels, and etc) to study from. I was hoping some of you would have some stuff that I can check out. It would be greatly appreciated. I'm currently...

Hi there, I was just wondering if anyone knows of any good materials, books, websites, Youtube users etc for me to teach myself Complex Analysis for school. Some good practice problems with answers and explanations would be wicked too. Thanks :)

I am a freshman (ore med). My curriculum does not have physics until junior year of college. I want to take the MCAT at the beginning of junior year. I am reading the AP Physics textbook of my high school (I didn't actually take AP Physics, I just bought the textbook) and while I am learning a...

I can't really find much differential equations problems workbook. I really want one but resources are limited. Can you please send amazon links and etc. that I can order a differential equations problems workbook? Also, it would be greatly appreciated that the workbook at least covers topics...

So what workbooks/resources do you use to solve calculus problems? AP level? Because I really want to solve problems, not only learning but to actually solve calculus problems that are AP level.

I can't find much elsewhere, so i figured id ask here. Can anyone give me some derivative/ integration practice questions. (ie related rates, implicit, Indefinite, Optimization etc) Also if you know of a site please post it too! Thanks!

Hi, I am a first year stats grad student and I am taking a class on linear models. The book and lectures focus on the format of definition, proof, lemma, definition, proof, lemma etc. However, I cannot seem to find anywhere some practice problems where I could use these definitions before I...

Hello all. I am preparing to take my math department's preliminary qualifying exam for pure math. It covers analysis and linear algebra. I have a good number of past papers but I was wondering if there is a good source, maybe a book or a website, for problems of similar difficulty. Thanks.

Practice Problems to "Nonlinear Dynamics..." Strogatz Book Hi, I'm taking a dynamics course which uses the "nonlinear dynamics and chaos" book by Strogatz. I get a half-descent understanding from the lectures of the prof and the book's explanations of things, but \ is\ there\ a\ good\...

Please help me I want special relativity practice problems. I am a second year.

I do not have any physics books. But I would like a source, if you know of any online, where I can get practice problems dealing with the basics. Such as, 1-D and 2-D motion dealing with equations such as (X=VoT+.5AT^2) (Also dealing with different Vectors and decomposition of Vectors dealing...

Hi all, Just wondering if anyone knows of a good webstite for practice problems. I ve looked around and most sites have one or two problems. Maybe its me but I learn better by doing lots of problems over and over. I am taking general physics and am now working on momentum, 1 d collisions...

Forgive me if this is the wrong forum for this. I'm looking for practice Kinematic problems with solutions. I've looked here (http://www.physicsclassroom.com/class/1dkin/U1L6d.cfm), but those questions are too basic. My prof asks more complex problems and I'm having a hard time finding good...

Hi, I'm new at this and I need some help with the following practice problems: 1) At what angle relative to the horizontal must an object be launched if its minimum velocity in flight is 28% of its launch velocity? The answer is to be in degrees. I have the answer to be 73.7. 2)...

I enjoy solving practice problems for any subject, especially maths and physics. It's challenging for me and I like a challenge, I could solve practice problems for the rest of the day without a problem, morning until night, which some may think is weird. Anyway, I hate reading textbooks in...

I'm working on brushing up on some programming languages. Being a big believer in the idea that the best way to learn is by doing, I'm looking for problems of various difficulties I can work through before embarking on some larger project. Anyone know a good resource?

Does anyone have any good websites with practice problems and great in-depth explanations on thermal energy/heat transfer at the introductory level (grade 11)? I've searched many websites only to find questions that are too advanced. Questions like: What mass of steam is produced when 2.4 X 10^6...

I'm currently taking the first semester of calculus based physics (mechanics). Can anyone provide me with some resources to practice for that? Preferably torque, equilibrium, angular momentum, and gravitation. Thank you.

Need help on Practice Problems PLEASE! Trying to work practice problems before I do the homework & I need help. If someone could show me step-by-step bow to do these two problems that would be GREAT. A weight of 12 N is located at a distance of 14 cm from the fulcrum of a simple balance...

My mom is going back to (nursing) school and has to take math next semester. So she's looking for some (high school level) algebra practice problems. Does anyone know of a good website for that? If you have any book suggestions, that'd be nice too, but she'd prefer a website.

an elevator weighing 2x10^5n supported by a cable what is the tension on the cable when accelerating up is 3m/s2 g=9.8 obviously and an ice skater moves at 10 m/s and coasts to a halt in 100 meters on smooth ice what is the coefficient of friction on skates/ice i have tried many...

Hi, I'm looking for a good reserve of practice problems (preferably with solutions) at the level of advanced undergrad or early grad. I'm not studying for anything (I'm already in grad and I've got a while before comps) I'd just like to do like a practice problem or 2 a day to really get sharp...

Practice Problems! Confused on what equations to use! Homework Statement Question 1: Calculate the angle of banking of a curve 200m in radius in order hat traffic moving at 70 km/h may round the curve without depending on friction. Homework Equations Don't know Homework...

physics practice problems... when do you guys usually find time to do practice problems...i mean, between having 3 labs and A LOT of other reading to do I am having trouble finding time to do practice problems for physics(1st college physics course)...I usually just read through the physics...

Hey, I think it would be beneficial for many if we started a thread that contained several problems (and hopefully solutions as well) that would be helpful in studying for the GRE. So, everyone, add a problem if you can (with solution!). I'll go first: Problem: A sample of N atoms of helium...

My AP Physics C class has a test tomorrow about Rotation Dynamics and my teacher gave us a practive exam over the weekend and i felt really good about it thinking i was going to do really well, but this practice exam is really difficult and I am stuck on every problem. there are four problems...

I have a Quantum Mechanics test on Wednesday and I was wondering if someone could recommend somewhere for me to find some practice problems and answers. I've googled and found some practice tests, but they don't have any answers for me to make sure I'm doing them right. The book I have is...

Homework Statement Aluminum oxide is formed from the reaction of metallic aluminum with oxygen gas. How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide? Homework Equations first equation:Al + O2 --> Al2O3 i balanced it at 4Al + 3O2 --> 2Al2O3 The Attempt at a...

hi, i got an exam soon and i need help with a couple of problems http://online.physics.uiuc.edu/cgi/courses/shell/phys101/spring06/prep2a.pl?practice/exam3/sp05 Question 7. How would i find the tension i know that i must use Bernoulli equation but what would i be solving for

Aluminum oxide is formed from the reaction of metallic aluminum with oxygen gas. How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide? I don't necessarily need help solving the problem itself (I want to try to do it on my own) but I don't understand how to set the...

I have about 10 questions, I hope someone can take the time to help me with. The directions are: "Use the 18 rules of inference, supply a proof for each of the following arguments." So, here goes: 1.) 1. (R v X) > (A > B) 2. ~ Q > ~ C 3. ~ C > Z 4. R .Y 5. Q v A...

Hi I have a Physics re-test tomorrow on Statics. Since everyone failed the 1st statics test he is going to let us take another one (he's really nice :smile: ). It is not going to be like the 1st one. Where can I get some statics practice problems?? I'm doing ALL of the problems in the book...

Does anyone know where I can get practice problems on kinematics and 2D motion with constant acceleration?