Answer:
The value is 
Explanation:
From the question we are told that 
 The speed is 
 The radius of the earth is 
Generally the circumfernce of the earth is mathematically evaluated as 
 
=> 
=> 
Generally the time taken is mathematically represented as 
 
          
Converting to days 
          
=>       
 
        
             
        
        
        
While ice melts, it remains at 0 °C, and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules per gram, and the heat of vaporization at 100 °C is about 2,230 joules per gram. So it will be C
 
        
                    
             
        
        
        
Answer: 134 neutrons are there in the nucleus of Radon-220
Explanation:
Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.
Thus, number of protons = atomic number = 86
Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.
Mass number = Number of protons + Number of neutrons 
220 = 86 + Number of neutrons 
Number of neutrons = 134
 
        
             
        
        
        
The car is traveling at 60 miles per hour. Theoretically, at this pace, It'll take (B.), 1/2 an hour. 
Brainliest? 
Hope I helped! ^-^