This question involves the concepts of the law of conservation of momentum.
The magnitude of the final momentum of the eight ball is "0.22 N.s".
According to the law of conservation of momentum:

where,
 = initial momentum of the cue ball = 0.23 N.s
 = initial momentum of the cue ball = 0.23 N.s
 = initial momentum of the eight ball = 0 N.s (since ball is initially at rest)
 = initial momentum of the eight ball = 0 N.s (since ball is initially at rest)
 = final momentum of the cue ball = 0.01 N.s
 = final momentum of the cue ball = 0.01 N.s
 = final momentum of the eight ball = ?
 = final momentum of the eight ball = ?
Therefore,

Learn more about the law of conservation of momentum here:
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Answer: Current in a wire
We can use the same right-hand rule as we did for the moving charges—pointer finger in the direction the current is flowing, middle finger in the direction of the magnetic field, and thumb in the direction the wire is pushed.
Explanation:
 
        
             
        
        
        
Answer:
a)      I₁ = 11.2 Lux
, vertical direction
, b)      I₂ = 1.44 Lux
Explanation:
a) A polarized is a system that absorbs light that is not polarized in the direction of its axis, therefore half of the non-polarized light must be absorbed
consequently the above the processed light has half of the incident intensity and the directional of the polarized
           I₁ = I₀ / 2
           I₁ = 22.4 / 2
           I₁ = 11.2 Lux
is polarized in the vertical direction
b) The polarized light falls on a second polarizer, therefore it must comply with the law of Malus
          I₂ = I₁ cos² θ
          I₂ = 11.2 cos² 69
          I₂ = 1.44 Lux
 
        
             
        
        
        
Lower. Water expands on lower temperatures, meaning less molecules in 1 m3, thus making it less dense
        
             
        
        
        
Answer:
a)  , b)
, b) 
Explanation:
a) The heat transfered to the egg is computed by the First Law of Thermodynamics:





b) The amount of entropy generation is determined by the Second Law of Thermodynamics:


