Physics ii Definition and 36 Threads

Homework Statement Three 18-cm long rods form an equilateral triangle. Two of the rods are charged to +10 nC, and the third to - 10 nC. What is the electric field strength at the center of the triangle? Homework Equations $$ \vec{E} = \frac{k*q}{r^2} $$ The Attempt at a Solution 1. Draw...

You're proctoring an exam, and a student who wears glasses uses those glasses to try and solve one of the optics problems. Do you fail him?

Hello, I just came across this forum and thought of asking for advice! I am reapplying to Engineering and I am taking summer school (Full term) and need to take 2 more classes to boost my avg. Right now, I am enrolled in Physics II, Calculus III, and ODE and I have to choose two out of the...

Homework Statement A resistor connected across an AC power supply has a current given by I=(1.35A)cos(300t) when connected to a power supply with emf 120 V rms. Find the RMS current. Homework Equations IRMS=Imax/√2 The Attempt at a Solution IRMS=Imax/√2 IRMS=0.477 A INCORRECT Not exactly sure...

I'm struggling just a little bit in Physics II ("An introduction to electricity, magnetism, and light, with emphasis on topics needed by engineering students" as described by the course listing), and I was wondering if there were any good resources to supplement my book, lecture, recitation...

Three identical point charges, each of mass m 0.10kg and charge q, hang from three strings, as pictured below. The lengths of the left and right strings are L 30.0cm and the angle is 45.0o. Just on looking at the picture I think the charge is positive since there is tension separation the...

Just failed my physics and calc 2 class in the same summer, where do I go from here? Or is it just due to the fact that i the classes were just 5 weeks?

Hi everyone...I'm just looking nmr schemes, and magnets, and, at the same time, studying Physics II and electromagnetic fields at my faculty of electronics engineering. I know this may sound like a "dumb" question, and I don't want to sound like councited or similar stuff, but I was just asking...

Homework Statement A solid glass cube with edge length of 10.0 mm and index of refraction n=1.75 has a small, dark spot dead center of the cube. Find the minimum radius of black paper circles that could be pasted at the center of each cube face to prevent the center spot from being seen, no...

Is it weird that I find physics II easier than physics I? I am currently in Physics II at university and flying through it with an A. However, I took Physics I at Community College and BARELY got a B. On my tests so far this semester I got a 87 on the first one and a 97 on the second one. In...

I'm a new TA in a physics laboratory and we're going to redesign experiences for fundamental physics II lab that is a semester course on electricity and magnetism for undergraduates in their 2nd year. What is your proposed list of experiences for a Physics II (Electricity and Magnetism)...

I am transferring from community college to university in the fall with only General Physics I completed, so I need to take General Physics II at university. I felt like I did okay in Physics I (I got a B), but I definitely would like to review some of the topics in that class, so what topics...

I am currently taking Physics II and need a good textbook to complement my course. We are using a free one, Spiral Physics, which is relatively worthless. It explains very basic concepts, but gives very few (if any) real-world examples and at least half the answers in the back for Physics II...

I am having some conceptual trouble in my physics II class right now. The book is not that good, and I am looking for a website that has good conceptual practice. Do any of you know a website like this? My professors conceptual quizzes are killing me right now, and it would be much appreciated.

So I am taking Physics II this fall semester. I am an engineering major, and I am currently split between mechanical, and civil. My questions is how hard will the class be for me? I have already done the three semesters of calculus including a vector calculus extension. I got an A in calc III...

Having Issues in Physics II :( Hi all, This is my first post on these forums, although I have lurked here for a little while here and there and I have to say I greatly appreciate the helpful topics you guys post! I have used them to get more than a few problems done... haha. Anyway, the...

Homework Statement Three charges are located in the x-y plane (see plot below), with Q1 = -6.00 μC, Q2 = 5.00 μC and Q3 = -3.00 μC. Note that the charges are located at grid intersections points. *I couldn't put the grid on here, but the points are Q1 = (-2,-4), Q2 = (-2, 2). and Q3 = (3...

Hey guys, I'm going to graduate in July. I need to take General Physics II to graduate in summer. Do you guys know which colleges offer General Physics II in Summer I? Thank you very much.

I'm currently taking Calculus-based Physics II, an introductory to electromagnetism. While I'm working hard to understand the material as deeply and intuitively as possible, I wonder how much of the material will be useful later on? I am seeing a bunch of concepts such as electric potential V...

I found it very entertaining last semester watching Walter Lewin lecture on Physics I topics whilst taking the course and reading my textbook. I'd sad to see that he doesn't have a video set for physics II topics! (waves, electrostatics, et al.) Does anyone know of a similar style video...

Homework Statement It has been a while since I have really been involved in trig seriously, But I felt it appropriate to go in this particular forum because in my classes from years back "precal" was the title associated with trig (: The Problem: sin(X) / sin(X/2)...

Alright here is my story: I took high school physics and loved it, went to college and took a class that is basically an algebra based physics class and a very light introductory just because I couldn't wait to get my hands on physics. When I was able to take Calculus based physics I did-- but...

I am reviewing for a test on oscillations and I have no clue how I derived a formula I used for my homework. Could anyone help me figure out where the equation v=w{\sqrt{A^2x^2}} comes from? Thank you.

Homework Statement A point particle that has a charge of 14.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 11.6 cm, y = 0. The electric force on a point particle that has a charge of 5.8 µC at x = 23.2 cm, y = 0 is -(19.7) N ihat. Determine the...

Hey, I am starting this course very shortly, and I always found that the books the professor recommended, I couldn't quite understand. So these are my syllables: Electrostatics: electric charge and field, Coulomb law, Gauss law; potential; energy; conductors; Poisson and Laplace equations and...

Homework Statement Two 3.0 g spheres are suspended by 9.0 cm long light strings. A uniform electric field is applied in the x direction. If the spheres have charges of -4.X10-8 C(coulomb) and +4.X10-8 C, determine the electric field intensity that enables the spheres to be in equilibrium...

I'm starting to think about next semester's schedule, and it looks if I won't be able to take Physics II b/c I retook calc I (had AP credit but didn't use it). Calc II is a Pre-req for Physics II. I really want to be a physics minor, or even double major. If I took Physics II over the...

I'm going to be taking Physics II with calculus next semester and honestly, I don't remember anything from Mechanics. I took it last year and I have horrible memory. Do you still think I'll do well in Physics II if I study hard and do problems with no previous knowledge of mechanics/physics I or...

I'm going to be taking second semester physics (calculus based) which is basically the E&M portion of the book and waves. I want some good textbooks and book recommendations. Like good books for understanding the materials. Do you think A treatise on E&M by Maxwell is too advanced for me or...

Homework Statement I know that the light wave must travel 17.3 km or 17300 meters. I found experimentally that the frequency should be 2200 Hz. I picked it from a pool ranging from 0 Hz to 5600 Hz. The goal was to see what frequency was required to get the light to pass correctly through a...

I have a bit of a dilemma coming up over the this summer. Due to the small size of my physics department most courses beyond Physics I and II are only offered once every year. I am in Physics I now and plan to take Physics II during a short semester over the summer(5 weeks) to get on the right...

Equation sheet limited to twenty equations spanning material from electrostatics to mutual induction. Halliday Resnick chapters 21-31. 2 hours. Seems like some questions depended on you having the equation accessible, which is a matter of chance. Core exams were usually 12 MC and 3-4...

Homework Statement See attached Homework Equations N/A The Attempt at a Solution I tried to do some of this, but I'm not even sure where to start. I'm so confused. I don't have the textbook yet neither as it hasn't come in the mail, so I can't reference it. My professor has a very...

hello, just a small question on taking phy II over the summer. my schools gone through a great deal of budget cuts and we're not left with a lot of options with regards to classes here. physics II is offered once in the first 6 week semester, may to june. once in the 2nd 6 week...

Help!Physics II question! A white light source is below the lower surface of a piece of optical-quality glass. The glass has an index of refraction of 1.520 for red light and 1.538 for violet. If you were able to move your eye at any angle relative to the perpendicular to the glass, calculate...

1)Wiley Coyote is chasing the roadrunner yet again. While running down the road, they come to a deep gorge, 15 m straight across and 78 m deep. The roadrunner launches itself across the gorge at a launch angle of 12 degrees above the horizontal, and lands with 2.4 m to spare. The acceleration...