A skier rides a ski-lift up to the top of the mountain, 1600 m above sea level. If the skier has a mass of 74 kg, how much potential energy does the skier have at the top of the hill (assuming PE = 0 J is at sea level)?

How are positive ions different from neutral atoms

Which model displays the change in a gas when the temperature of the gaseous system decreases?

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.