A. What is the momentum of the system before the collision? (Write it in component form.) (1 point) b. What is the momentum of the system after the collision? (1 point)

c. Write the velocity of the cue ball after the collision in component form. (1 point)

d. What is the x-component of the velocity of the eight ball after the collision? (2 points)

e. What is the y-component of the velocity of the eight ball after the collision? (2 points)

f. At what angle does the eight ball travel after the collision? (2 points)

g. What is the magnitude of the eight ball's velocity after the collision? (1 point)

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.