Recent content by 1st1

Ok, I figured it out thanks for the input.

The calculator is set to degrees, not radians. I've checked. However if I put the angle in as radians it does work. Maybe it only works with radians even though I'm in degree mode.

Hi, I am having some difficulty understanding what is going on with the TI-84 complex number calculation in switching between rectangular and polar coordinates, hopefully someone can clarify this for me. For example, take the term 6<30 (6 angle 30). When I calculate this by hand going from...

Yea, its a multiple choice question. Thanks for your help!

The reason I don't believe its rounded is because the options are: (a) 16 m/s (b) 74 m/s (c) 274 m/s (d) 1600 m/s (e) 4570 m/s So if it were rounded it would be rounded to 1580 and in my physics exams they always give you the exact answer or really close to it.

1. A quantity of molecular hydrogen (H2) gas fills a one liter container at a temperature of 200 K and pressure of 1 atm. What is the average (rms) speed of the molecules? Homework Equations KE_trans = 1/2 M<v^2> Energy_trans = 3/2kT = 3/2RT H2 = 2g/mol The Attempt at a Solution...

Thank you that's perfect!

Homework Statement A circuit consists of a capacitor and an inductor. The resistance in the circuit is small and can be neglected. Initially, at t = 0 s, the voltage across the capacitor is at its maximum of VC = 10 V, the charge stored in the capacitor is 1 mC. It is observed that the...

Ok, I know the answer just by looking at the choices. What I am trying to figure out is where part of that answer comes from. I don't see where that pi^2 in the denominator comes from.

Ok, but then where does the pi^2 term come from in the denominator? Also, the answer is (a) which makes since for the cos, but the pi^2 is what I don't get...

Homework Statement A short, straight wire segment of length l carries current I and is oriented so that it makes an angle of 30° with the horizontal. Point P is a distance r below the wire segment. Which expression below is the best approximation for the magnetic field caused by the wire...

Thank you, the bold part is where I was confused. But now I see I was looking at it the wrong way. Thanks!

Anyone able to help? I've got the answer, I just want to know if I am doing it correctly and whether the capacitors are considered to be in parallel or in series and why.

I suspect you mean free body diagrams, if so check this out: http://www.physicsclassroom.com/Class/Newtlaws/U2l2c.cfm

Yes, I'm sorry its a three part question and I forgot the main part of the question statement. Fixed now.