Answer:
Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy
Explanation:
 
        
                    
             
        
        
        
The EM spectrum has no limits.  Any frequency you can imagine 
is the frequency of some electromagnetic radiation somewhere. 
        
             
        
        
        
Answer:
   v_average = 15 m / s
Explanation:
The average speed can be found in two ways,
* taking the distance traveled and divide it by the time spent
* taking the velocities in each time interval and then finding the weighted average by the time fraction
               v_average = 1 / t_total ∑   vi ti
vi ti
Let's apply this last equation
                
Total time is
                t = t₁ + t₂
                t = 10 + 10 = 20   min
               v_average = 10/20 10 + 10/20 20
               v_average = 10/2 + 20/2
               v_average = 15 m / s