Given a variable n that is associated with a positive integer and a variable s that is associated with the empty string, write some statements that use a while loop to associate s with a string consisting of exactly 2n asterisks (*) . (So if n were associated with 4 then s would, in the end, be associated with "" .

Here is the Python program:

n = int(input("Enter a positive integer n: "))  

#prompts user to enter value of n and stores that value to n variable

s= 2*n  #  to associate 2n asterisks

asterisks = '*'  # used to display asterisks

while n>0:  # loop continues until n is less than or equal to 0

 print(asterisks*s)  #prints 2n asterisks

 n = n-s         # decrements value of n by s

Step-by-step explanation:

This program prompts user to enter value of n. n has the positive integer value and s holds 2*n to associate 2n asterisks. asterisks variable hold asterisk that is to be displayed 2n times. The loop continues to associate asterisks with s which is 2 times the value of n and displays these asterisks on output screen. The while loop breaks when value of n is less than 0. The output is displayed in screenshot.

lk; kjuiihijhniuhn

step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v