The formula that can be applied in this problem is W = Fd
where W is work, F is the force and d is distance. You have 450N and 3m, all
you have to do is to multiply it.
W = Fd
W = (450N) (3m)
W = 1350J
The answer is letter C.
 
        
             
        
        
        
<span>Among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of
B) legumes</span>
        
             
        
        
        
We know that Weighted atomic mass of Element is Calculated based upon their existence of isotopes and the Relative abundance of these isotopes.
Given that the Element X is Composed of :
Isotope                       Relative abundance                   Atomic Mass
⁵⁵X                                        70%                                               55
⁵⁶X                                        20%                                               56
⁵⁷X                                        10%                                                57
Weighted Atomic Mass of Element X : 
= (0.70)(55) + (0.20)(56) + (0.10)(57)
= 38.50 + 11.2 + 5.70
 = 55.4
So, the Weighted Atomic Mass of Element X is 55.4
 
        
             
        
        
        
Electrons are responsible for the transfer of charge.