Accelerating voltage<span> is the difference in potential between the filament and the anode,and it can be varied between 5 KeV and 30 KeV on the S-500 and between 2 KeV and 30 KeV on the S-450. As the </span>voltage<span> is increased, the electrons travel with higher velocity and are more energetic.</span>
        
             
        
        
        
Answer:
12500W
Explanation:
Given parameters: 
Work done  = 250000J 
Time taken  = 20s 
Unknown: 
Power of the crane = ? 
Solution: 
Power is the defined as the rate at which work is being done; 
   Mathematically; 
         Power =  
 
  insert the parameters and solve; 
       Power  =  = 12500W
   = 12500W
 
        
             
        
        
        
Answer:
brand name, or company
Explanation:
a brand name is  the kind of product they are selling. a company is the group of peaple that wok together.