1 inch = 2.54 centimeters
All we need to do is multiply.
68.5 * 2.54 = 173.99cm
Best of Luck!
 
        
                    
             
        
        
        
1. I think it's the trails left by an electron as it moves around the nucleus. 
2. The atomic number is the number of protons so it is 8. 
3. It's mass is lowered but it is still the same element.
        
                    
             
        
        
        
Answer:
34 m/s
Explanation:
m = Mass of glider with person = 680 kg
v = Velocity of glider with person = 34 m/s
 = Mass of glider without person = 680-60 kg
 = Mass of glider without person = 680-60 kg
 = Gliders speed just after the skydiver lets go
 = Gliders speed just after the skydiver lets go
 = Mass of person = 60 kg
 = Mass of person = 60 kg
 = Velcotiy of person = 34 m/s
 = Velcotiy of person = 34 m/s
As the linear momentum of the system is conserved

The gliders speed just after the skydiver lets go is 34 m/s
 
        
             
        
        
        
An opera singer breaks a thin glass with only the use of her high frequency voice