Aboy is pushing on a heavy door, trying to slide it open. his friend stands behind him and him push. how have the forces changed? a. the net force applied will increase. b. the net force will decrease. c. there will be less friction. d. the applied force will not change.

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.