11. A transverse pulse with an amplitude of 3 cm is sent to the right along a coiled spring. A second transverse pulse with an amplitude of 2 cm is sent to the left along the same coiled spring and on the same side as the
first pulse.
a) What will be the amplitude of the pulse at the moment the centers of each pulse meet?
b) How would your answer change if the pulses were on opposite sides of the coiled spring?
12. During the coiled-spring investigation your partner generates a wave pulse that takes 2.64 s to go to the
far end of the coiled spring and back to your partner. The coiled spring stretches 4.5 m along the floor. What is
the speed of the wave pulse on the coiled spring?