1: You are watching a Star Trek episode. The characters on the Enterprise see an

Question

1: You are watching a Star Trek episode. The characters on the Enterprise see another ship explode in space. The explosion is accompanied by a loud "boom Is there anything wrong with this? Explain. 2: A stone is dropped from rest into a deep canyon. It is heard to hit the bottom 10.2 s after being released. How deep is the canyon? 3: In a longitudinal wave in a slinky, the coils move back and forth along the wave's direction of motion. Does the speed of the coils depend upon the speed of the wave? If yes, then explain why. If no, then explain what the speed does depend upon 4: The pressure variation in a traveling sound wave is described by p(z,t)-10 sin(2.94 1000xt) Pa. What is the speed of the wave? b: What is the smallest distance between two molecules one of which is at ts maximum displacement and one of which has zero displacement? Explain e: Determine the maximum rate at which the pressure changes d: Determine the maximum acceleration of a molecule. Assume that -1.2 kg/m3 e: The wave is perfectly absorbed by a 2m2 surface which lies perpendicular to the wave velocity. How much energy is transfered to that surface in 10 s?

Explanation / Answer

Please follow chegg's guidelines... you cannot post these many questions at once and they are not related at all.

1) Yes, everything is wrong here. Sound waves need a medium to travel in space, sound waves cannot travel through vacuum. Therefore, it is not possible to hear any "boom" sound.

2) t= = 10.2 sec

u = 0

Here, we can use kinematics equation

h = ut + 1/2at2

h = 0 + 1/2at2

h =  1/2at2

h = 1/2*9.8 m/s2 * 10.22

h = 509.79 m

3. The speed of the wave depends on follwing factors:

(a) tension

(b) mass of the coil.

It means smaller the mass, more is the tension, the faster will be the energy transfer and its propagation through slinky.

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