Hey student puts a bathroom scale in an elevator. when the elevator is not moving, the student weighs 668 n. when the elevator accelerates upward, the student weighs713 n. what is the net force on the student when the elevator is accelerating upwards?

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is

Which of the following list the divisions of the geologic time scale in order from longest to shortest

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.