Aswimmer takes 45 seconds to complete a 100-meter lap. calculate the swimmer’s average speed.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?