Recent content by dgresch

Homework Statement A 3.000 u (1 u = 931.5 MeV/c2) object moving to the right through a laboratory at 0.8c collides with a 4.000 u object moving to the left through the laboratory at 0.6c. Afterward there are two objects, one of which is a 6.000 u object at rest. Determine the mass of...

Never mind, I figured out its just B=u0NI/2r and I take C=2pie *r to give me length

The maximum torue experienced by a circular, one-turn, coil in a 0.75T magnetic field is 8.4x10-4Nm. If the coil current is 3.7A, find the coil wire length. Homework Equations τ=Fr F=ILBsinθ ? r=L The Attempt at a Solution (8.4x10-4Nm)=[(3.7A)L(0.75T)sin90]L L=0.017m Can I do...

Thanks gneill, I'm new to this and I thought to just post my own thread since I didn't see it on google :P.

thanks for the confirmation

A galvanometer has a full scale current of 0.100 mA and a coil resistance of 50ohmes. In constructing an ammeter of 60mA full scale, what shunt resistnace is needed?I'm lost on this one.

Two neutral metal spheres are separated by 0.5m when 3.0x1013 electrons are transferred from one to the other. Calculate the resultant force magnitude and whether it is attractive or repulsive. q=Ne F=kq1q2/r2 I think? q=(3.0x1013)(-1.602x10-19C) q=-4.8uC...