Which part of the heating curve corresponds with the heating of liquid water?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

What will a positive and a negative charge do if they are separated from each other?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?