Neutron is commonly used to initiate a fission chain reaction.
        
             
        
        
        
Answer:
11.3 m/s
Explanation:
KE₁ = KE₂
½m₁v₁² = ½m₂v₂²
½ (2 kg) v² = ½ (4 kg) (8 m/s)²
v ≈ 11.3 m/s
 
        
             
        
        
        
Answer:
b
every magnet is made of many aligned smaller magnets
Explanation:
 
        
             
        
        
        
Answer:
<em>I </em><em>don't</em><em> know</em><em> </em><em>what</em><em> </em><em>are </em><em>you </em><em>saying</em><em> </em><em>but </em><em>I </em><em>don't</em><em> </em><em>have </em><em>any</em><em> </em><em>results</em><em> </em>
Explanation:
