Answer:
A free body diagram is used to calculate static and dynamic forces acting on an object. In other words, a free body diagram is the starting point to develop a mathematical model to find and calculate various forces acting on a body.
Explanation:
 
        
             
        
        
        
The option in “the mass of 1me of carbon equals the mass of 1 mole of boron atoms” is false since 
Mass=molesx molar mass
And the molar masses of these two elements are different so their masses aren’t equal
        
             
        
        
        
Answer:
Ribosome, Hexokinase, Glucose, CO2.
Ribosomes are proteins that sintetize the proteins in the cell, depending of the organism, the can size up to 30 nm. Hexokinase is an enzyme that measures approximately 50 kDa, and in its spatial conformation it sizes about 5 to 6 nm in diameter. Glucose is a molecule that sizes about 1 nm, and CO2 is another molecule that sizes 0.232 nm. 
 
        
             
        
        
        
Answer:
the answer is B no need to struggle ur answer is correct