a solid metal cylinder of radius r = 3.0 cm is located inside a hollow metal cylinder of inner and outer radius r(in) = 12 cm and r(out) = 16 cm, respectively. Both cylinders have the same length L. A and B are at distances distance A = 9.0 cm and distance B = 25 cm, respectively. The electric fields at A and B are E at A = 1.25 ✕ 10^4 N/C and E at B = −1.25 ✕ 10^4 N/C, respectively.

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.

Can you match these to the correct definition

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative