At what rate is thermal energy being generated in the 2R-resistor when ε = 12 V and R = 3.0 Ω?​

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

The radius of an atom is closest in size to a

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.