Recent content by Legendon

this is a better picture

ok thanks. :) https://www.physicsforums.com/showthread.php?p=3581473#post3581473 If you don't mind can you help me out with this ?

At B its much easier since the b field is the superposition of the respective fields. If it was an electric field, then we can just draw a gaussian surface and just see what the surface encloses. Is it the same with magnetic fields to draw a surface and see what current it encloses? I can see...

I still don't get why at a the magnetic field must be0 due to I2...

Homework Statement The figure above (right) shows a cross-sectional view of a coaxial cable. The center of the conductor is surrounded by a rubber layer, an outer conductor and another rubber layer. In a particular application, the current in the inner conductor is I1= 1.00 A out of the page...

Homework Statement Is is possible to have capacitor with one plate charge +Q and another charge -K, K≠Q. Homework Equations C=Q/ΔV. Because i wouldn't know what to substitute for Q.. The Attempt at a Solution I don't think it is possible for a capacitor connected to a single...

anyone ?

Homework Statement motor is mounted on top of lift. a)if p moves by y, what is the displacement of Pt A? Prove that Vp=-3Va. b)If motor unwidns cable at const rate 2m/s, what is vel of cable wrt lift. Prove vel of lift is 0.5m/s Homework Equations The Attempt at a Solution I...

The answer is r2/r1. No matter what I'm doing i always have the variables q1 q2 and r1^2 and r2^2 inside my ratio...

Homework Statement Two spherical conductors of radii r1 and r2 are separated by a distance much greater than the radius of either sphere. The spheres are connected by a conducting wire. The charges on the sphere are in equilibrium are q1 and q2 respectively, they are uniformly charged. Find...

Homework Statement An ideal gas at 300 K and 1.5x10^5 Pa is contained in a piston cylinder device. The piston is 0.1m above the base of the cylinder, has a diameter of 0.15 m and is allowed to move freely. Heat is transferred to the cylinder causing the piston to move a distance of 0.05 m. The...

Ok, today the lecturer started on kinetic theory of gasses, i realized jR/2 is the heat capacity. and for oxygen, j=5. Thanks.

"He didn't need to take into account pressure, just as he didn't take into account Volume because PV = nRT. He has nRT, just in the form of m.c.dT." Thank you.

I am not using molar heat capacity? on my notes it says Kinetic energy=3/2nRT??. But i am confused with the teacher's method. Is heat dependent on pressure? the teachers method is i see it as putting solution1 of temp1 and solution2 of temp2 together and finding final temp. But with gas of...

Homework Statement Two thermally insulated vessels are connected by a narrow tube fitted with a valve that is initially closed. One vessel of volume 16.8 L contains oxygen at a temperature of 300 K and a pressure of 1.75 atm. The other vessel of volume 22.4 L contains oxygen at a temperature...