Answer:reactant,active site,enzyme below,substrate,products 
Explanation:
 
        
             
        
        
        
If a = 23 and b = 45
a + b = ? 
23 + 45 = 68
        
             
        
        
        
Answer:
B. By adding the number of protons and the number of neutrons
Explanation:
The atomic mass is determined by adding the number of protons and neutrons in an atom. An atom is made up of three fundamental particles: Electrons, Protons and Neutrons.
The protons and neutrons occupy a central region in an atom known as the nucleus. The nucleus is positively charged and mass concentrated. 
If we compare the relative masses of the subatomic particles, the masses of protons and neutrons would be 1 and that of an electron would be 1/1840. This shows that the mass of electrons are negligible.
In order to ascertain atomic mass, we therefore add the number of protons and neutrons together. This is how we arrive at 12.011 as the value of the atomic mass of C and for other elements.
The atomic mass is also known as the mass number. 
 
        
             
        
        
        
Answer:
α = - 1.883 rev/min²
Explanation:
Given
ωin = 113 rev/min
ωfin = 0 rev/min
t = 1.0 h = 60 min
α = ?
we can use the following equation
ωfin = ωin + α*t      ⇒     α = (ωfin - ωin) / t
⇒     α = (0 rev/min - 113 rev/min) / (60 min)
⇒     α = - 1.883 rev/min²
 
        
             
        
        
        
Answer:
The value is 
Explanation:
From the question we are told that 
     The mass of the object is  
     The unstressed length of the string is  
     The length of the spring when it is  at equilibrium is  
       The initial speed (maximum speed)of the spring when given a downward blow 
 Generally the maximum speed  of the spring  is mathematically represented as 
            
Here A is maximum height above the floor (i.e the maximum amplitude)
             and  is the angular frequency which is mathematically represented as
 is the angular frequency which is mathematically represented as 
        
So 
         
=>      
Gnerally the length of the compression(Here an assumption that the spring was compressed to the ground by the hammer is made) by the hammer is mathematically represented as 
            
=>         
=>         
Generally at equilibrium position the net force acting on the spring is  
             
=>         
=>        
So 
             
=>          