Apower source for a portable electrical defibrillator contains a capacitor of capacitance 60 μf. the potential difference across the plates of the capacitor is raised to 5.0x10^3 v and 20% of its stored energy is released in a 3.0 ms pulse. calculate the average power of the pulse.

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.