Which quantity in the equation e=mc^2 represents the speed of light?
a. c.
b. s.
c. m.
d. e.

Ared apple is illuminated by a blue light the apple will appear

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.

What are the north and south poles of a solenoid change with?