Which of the following describes the magnetic field lines produced by the straight wire carrying current? magnetic field lines radiate out from the wire to infinity. magnetic field lines come in from infinity to the wire. magnetic field lines form circles that pass through the wire. magnetic field lines form circles that go around the wire.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

What is the equation for electrical work?