Well, the diameter of a circle is simply a length, so your measurement will have units of length.  We just have to find an answer that has only units of length.
A).  gram, second . . . mass and time.  That can't be it.
B).  kilogram, ampere . . . mass and current.  That can't be it.
C).  centimeter, meter . . . both lengths. This one is looking good.
D).  candela, mole . . . light intensity and some chemical thing. That can't be it.
So it can't be anything else on this list but <em>C</em> .
 
        
             
        
        
        
speed of tortoise is given as v1 = 0.14 m/s
speed of hare is given as v2 = 20*0.14 = 2.8 m/s
now let say the total length of the path is "d"
so the total time taken by the tortoise to cover this

now given that hare took rest for 1 min
so total time of run for hare is (t - 60)s
so the distance that hare covered is given by

now by above two equations



and the time t is given by


so part a)
t = 63 s
part b)
d = 8.82 m
 
        
             
        
        
        
No two electrons in an atom or molecule may have the same four electronic quantum numbers, according to the Pauli Exclusion Principle. Only two electrons can fit into an orbital at a time, hence they must have opposing spins.
<h3>What is Pauli's exclusion principle ?</h3>
According to Pauli's Exclusion Principle, no two electrons in the same atom can have values for all four of their quantum numbers that are exactly the same. In other words, two electrons in the same orbital must have opposing spins and no more than two electrons can occupy the same orbital.
- The reason it is known as the exclusion principle is because it states that all other electrons in an atom are excluded if one electron in the atom has the same specific values for all four quantum numbers.
Learn more about Pauli's exclusion principle here:
brainly.com/question/2623936
#SPJ4
 
        
             
        
        
        
Answer:
The  time taken is  
Explanation:
From the question we are told that 
    The  speed  of  first car is  
     The  speed  of  second car is 
    The  initial distance of separation is  
The distance covered by first car is mathematically represented as 
      
Here   is the initial distance which is  0 m/s
 is the initial distance which is  0 m/s 
   and   is the final distance covered which is  evaluated as
  is the final distance covered which is  evaluated as  
 
So 
      
      
The distance covered by second  car is mathematically represented as 
      
Here   is the initial distance which is  119 m
 is the initial distance which is  119 m
   and   is the final distance covered which is  evaluated as
  is the final distance covered which is  evaluated as  
 
        
Given that the two car are now in the same position we have that 
     
    