A 0.150 kg mass is attached to one end of a horizontal spring that has a spring constant of 750 N/m. The mass is pulled away from equilibrium and released so that it bounces back and forth on a frictionless horizontal surface. In moving from point A to point B, 0.515 J of work is done on the mass. If point A is 4.00 cm away from equilibrium, how far away from equilibrium is point B

This is the substance(s) formed in a chemical reaction.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

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.