Answer:
 
Explanation:
The expression for the deBroglie wavelength is:
 
Where,  
 is the deBroglie wavelength
 is the deBroglie wavelength  
h is Planck's constant having value  
m is the mass of electron having value  
v is the speed of electron.
Given that v =  
Applying in the equation as:
 
 
 
 
 
 
        
             
        
        
        
The bowl has more volume, the bearing has more volume. The mass is bigger for the bearing because it is heavier than the bowl. It is made of metal and the weight of it is greater than the bowl.(the body shape).
        
             
        
        
        
Answer: I am confident the answer is B
Explanation:
forgive me if im wrong
 
        
             
        
        
        
Atomic mass of sodium is 22.9 g/mol
atomic mass of chloride is 35.45 g/mol
sodium chloride is 22.99 + 35.45= 58.44 g/mol
        
             
        
        
        
Answer:
Work done, W = 100 J
Explanation:
We have, Billy the friendly Robot uses 50 N of force to lift a box 2 meters in the air.
It is required to find the work done by Billy.
Work done by an object is given in terms of force and displacement. The formula used to find the work done is given by :

So, the work performed by Billy is 100 J.