Many new immigrants arrived in us cities in the first half of the 1800s. what was the main cause of the problems they encountered? the cities were unprepared for so many new inhabitants. all of the available jobs required workers to have certain skills. immigrants were persecuted for their political beliefs. they faced competition from the millions of other new immigrants.

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec

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.

The flow of electrons from one atom to another is called