Answer:
It should be option B polarization 
 
        
                    
             
        
        
        
<span>a. the amount of matter in a given volume </span>
        
                    
             
        
        
        
Translate please, i’d be able to help better:)
        
             
        
        
        
Answer:
  F = 1.047 10⁻² N
Explanation:
Let's use kinematics to find the angular acceleration
              w = w₀ + α t
as for rest w₀ = 0
              w = α t
              α = w / t
let's reduce the magnitudes to the SI system
               w = 1000 rev / min (2π rad/ 1 rev) (1 min/ 60s) = 104.72 rad / s
               m = 1.00 g (1 kg / 1000 g) = 1,000 10⁻³ kg
               r = 10.0 cm (1 m / 100 cm) = 0.100 m
let's calculate
               α = 104.72 / 1
               α = 104.72 rad / s²
angular and linear variables are related
                a = α  r
                a = 104.72 0.100
                a = 10.47 m / s²
finally we substitute in Newton's second law
                F = 1 10⁻³ 10.47
                F = 1.047 10⁻² N
 
        
             
        
        
        
Answer:
Elements that are made from only one type of atom
Explanation: