Answer:
Instantaneous speed means speed at any instant 
that means Speed is changing with time 
You know speed is distance/time 
So that means distance is also changing with time 
So we take infinitesimal small distance per infinitesimal small time As we assume speed is constant in infinitesimal small time dt 
So, we take speed = ds/dt 
ds = infinitesimal small distance
dt = infinitesimal small time 
As its ratio is equal to speed at any instant 
Note : We are taking infinitesimal small distance 
But :) we are taking infinitesimal small time also
As you know if denominator is small fraction is large So fraction always give large value 
So it's not O ( this makes confuse to most of students)
So, thanks 
Good question
Keep thinking like this :)
 
        
                    
             
        
        
        
Uncertainty means that your result may be very random, so you can't trust the first or second or so observation, making several samples critical for accuracy. <span />
        
                    
             
        
        
        
Answer:
it is atoms and molecules
 
        
                    
             
        
        
        
Answer:
we know that current = charge/time
Explanation:
therefore, 
A = 8000/120
A => 66.666.... amperes
 
        
             
        
        
        
<span>Kepler found that the orbits of the planets were elliptical.  
His work was so convincing that to this day, they still are. </span>