Pre- and post-collision information is shown. Identify the collision parameters that are consistent with the indicated change in momentum.
Initial State
Collision Parameters
Final State
v = 12 m/s
v=8 m/s
w
8 kg
8 kg
W
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(A + sign indicates a rightward direction; a - sign indicates a leftward direction.)
F=-16 N,
Δt = 2s
Ap =
-4 kg•m/s
Impulse =
-80 Nos
F = -32 N
Δt = 2s
Ap =-20 kg-m/s

no sign of dia of fuel cell

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

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.