Answer:
Nucleosynthesis
Nucleo means "core" as in atomic assembly of protons and neutrons.
Synthesis means "to make"
 
        
             
        
        
        
Answer:
 Inclined planes are simple machines used to make work easier. Ramps, ladders, and staircases are all inclined planes.
Explanation:
 
        
                    
             
        
        
        
Answer:
C ) 1.53
Explanation:
The critical angle of a material is given by the formula

where
c is the critical angle
n is the refractive index
This formula is valid if the second medium is air (which is the case of the problem).
In this problem, we know the critical angle:

Therefore we can rearrange the equation to find the refractive index:

 
        
                    
             
        
        
        
The first human made object made to orbit earth was the Soviet Union's Sputnik 1, it launched the 4th of October 1957.