<span> planetary satellites vary greatly in size, from very small, to some that are larger than some planets.</span>
Answer:

Explanation:
Generally the workdone in moving the proton is mathematically represented as

Where 
So

Here
is the velocity at A with value 50 m/s
So


Also

Here
is the velocity at A with value 
=> 
=>
So


Now this workdone is also mathematically represented as

So

Here 
So


Generally proton movement is in the direction of the electric field it means that 
So

The peppered moth is a temperate species of night-flying moth. Peppered moth evolution is an example of population genetics and natural selection.