A copper rod with a mass of 0.180 kg slides on parallel horizontal steel rails, 0.520 m apart, and carries a current of 11.0 A. The coefficient of friction between the rod and rails is 0.360. What vertical, uniform magnetic field is needed to keep the rod moving at a constant speed

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?