Give your end of the slinky a push with your hand.This compresses the releases energy. Notice that the energy moves foward. It moves in the direction of its length, just like a longitudinal wave. What happens to the energy when it reaches the end of the slinky?

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A slinky has a mass of 0.28 kg and negligible length. When itisstretched 1.8 m, it is found thattransverse waves travel thelength of the slinky in 0.72 s. (The Slinky stretches like an idealspring,and propagates transverse waves like a rope with variabletension.)

(a) What is the force constant, k, oftheslinky?
1 N/m

(b) If the slinky is stretched less, willthe time required for awave to travel the length of the slinkyincrease, decrease, or staythe same?
2---Select---increasedecreasestay the same

Explain.
3
(c) If the slinky is stretched 0.9 m, howmuch time does it take awave to travel the length of theSlinky?
4 s

For a class project, Kevin wanted to do a wavesdemonstrationusing the slick-slinky he just bought. Theslick-slinky isdifferent from any slinky he had ever seen. Half ofits coils arethick and the other half are thin. The manufacturerclaims that themass of the thick portion is four times the mass ofthe thinportion. Kevin made some tests and took notes.Unfortunately, hedid not organize his notes and he now has no clueon whatexperiment each of the notes describes. He needs your help.In thefirst experiment, Kevin held the end with the thick coils andhiswife held the side with thin coils, a distance L = 17.0 m away.Kevin started atransverse pulse with an amplitude of A = 19.0 cm byjerking theslinky to the right. Kevin, with your help, hadconcluded that thepulse moves at v₁ = 2.0 m/s at his endof the slinky(thick one) and at v₂ = 4.0 m/s at hiswife's end of theslinky (thin one). In the second experiment,Kevinâs wife(still holding the side with the thinner coils) startedatransverse pulse with the same amplitude "A" by jerking her endofthe slinky to the right. What is in m/s the speed of the pulsethatgot transmitted into the thick coil section of the slinky?

When a wave moves, what happens to the medium?

(1) It moves up and down or back and forth, but it does not move forward with the wave.

(2) It moves forward with the wave.

(3) It moves only perpendicular to the energy of the wave.

(4) It moves only parallel to the energy of the wave.