Aball is dropped from a 100-m tall building. neglecting air resistance, what will the speed of the ball be when it reaches the ground 4.5 seconds later?

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

When an object is heated it contracts. a. true b. false

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?