Recent content by Mysterious

Homework Statement A thin plastic rod of length L with total charge +q uniformly distributed along only the outer half-length is shown in Fig. 1. The rod is rotated at a constant angular speed w rad/sec about, and perpendicular to, the z-axis. Find the magnetic field B at the pivot...

Homework Statement A long, straight, copper wire has a circular cross section with radius R, resistivity p and permittivity ε. If the current through the wire at any time t is sin(ωt) amperes, find the magnitude of the magnetic field B at time t a distance r from the centre of the wire for r >...

That makes perfect sense. Thank you so much.

That makes sense. However, it doesn't explain why the solutions manual does not consider the weight force of the bar when applying's N2L: They solve a = IlB/m where m = 2.60 N/9.80 m/s^2 as you said. But I don't understand why it is not a = (IlB - mg)/m.

Homework Statement A 2.60-N metal bar, 1.50 m long and having a resistance of 10.0 Ω, rests horizontally on conducting wires connecting it to the circuit shown below. The bar is in a uniform, horizontal, 1.60-T magnetic field and is not attached to the wires in the circuit. What is the...