Answer:
The most common cause of shoulder blade pain is a muscle strain. 2  Short-term overuse of your arms and upper torso may be experienced in your scapula. This pain may be accompanied by pain in other muscle groups, such as your shoulder or back, but can be felt only in your shoulder blade as we
Explanation:
there im 13 sooo 
 
        
             
        
        
        
Hydrocarbons is the simplest organic compound mad by hydrogen and carbon
        
                    
             
        
        
        
Answer:
I think it's letter C or A 
 
        
             
        
        
        
Answer: The angle of refraction is 32°
Explanation:
By snell law, we have that:
n₁*sen(θ₁) = n₂*sen(θ₂)
Where n₁ = 1.5
n₂ = 2.0
θ₁ = 45°.
then we want to find the angle of refraction.
1.5*sin(45°) = 2*sin(x)
x = Asin(1.5*sin(45°)/2) = 32°
 
        
             
        
        
        
<span>The reserves will eventually be used up. </span>