PLEASE HELP Two friends are playing with a long spring. Tim (on the left) sends a single wave pulse with an amplitude of +2 down the spring at the same time that Jim (on the right) sends a wave pulse with an amplitude of -2. (See picture above.) Which of the following statements, do you feel, best describes will happen when the pulses reach each other? Explain your choice. A. The pulses will bounce off each other.
B. The pulses will pass through each other.
C. The pulses will cancel out and will disappear from the spring.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.