Lab 2: Flowcharts, Programming, and Tracing
Points Possible: 100
Due: Thursday, September 12th
In this lab, we will practice the concepts learned in week two. We will use flowcharts, tracing, and Python programming to solve the problems.
Submission:
- Please submit flowcharts for each program design.
- Submit a Python file for each of the four programs.
- Submit tracing tables of each program (similar to how we practiced in class).
Program 1: Compute the volume of a cylinder
Draw a flowchart of the program design take a picture and save it as flow1.png and attach it to the Blackboard lab assignment.
Write a program that reads in the $radius$ and $length$ of a cylinder and computes the $area$ and $volume$ using the following formulas:
\[area = radius * radius * \pi\] \[volume = area * length\]- Where $\pi$ is 3.14159
Please print the $area$ and $volume$ values.
Save the program is cylinder.py and attach it to the Blackboard lab assignment.
Complete a tracing table of the program above and take a picture and save it as trace1.png and attach it to the Blackboard lab assignment.
Program 2: Miles to kilometers
Draw a flowchart of the program design take a picture and save it as flow2.png and attach it to the Blackboard lab assignment.
Write a program that takes an input value in miles and converts and displays an equivalent value in kilometers (note that 1 mile is 1.609 kilometers).
Save the program is m2k.py and attach it to the Blackboard lab assignment.
Complete a tracing table of the program above and take a picture and save it as trace2.png and attach it to the Blackboard lab assignment.
Program 3: Financial application: calculate interest
Draw a flowchart of the program design take a picture and save it as flow3.png and attach it to the Blackboard lab assignment.
If you know the $balance$ and the annual percentage interest rate, you can compute the $interest$ on the next monthly payment using the following formula:
\[interest = balance * (AnnualInterestRate / 1200)\]Write a program that reads the $balance$ and the annual percentage interest rate and displays the $interest$ for the next month.
Save the program is finance.py and attach it to the Blackboard lab assignment.
Complete a tracing table of the program above and take a picture and save it as trace3.png and attach it to the Blackboard lab assignment.
Program 4: Physics - find runway length
Draw a flowchart of the program design take a picture and save it as flow4.png and attach it to the Blackboard lab assignment.
Given an airplane’s acceleration $a$ and takeoff speed $v$, you can compute the minimum runway $length$ needed for an airplane to takeoff using the following formula:
\[length = v^2 / 2a\]Write a program that prompts the user to enter velocity $v$ and acceleration $a$ and displays the minimum runway $length$.
Save the program is physics.py and attach it to the Blackboard lab assignment.
Complete a tracing table of the program above and take a picture and save it as trace4.png and attach it to the Blackboard lab assignment.
Grading Rubric for each of the programs:
| Grading | Points Possible |
| Appropriate header and comments | 5 |
| Input | 2 |
| Flowchart | 3 |
| Computation | 5 |
| Print output | 5 |
| Tracing | 5 |
TOTAL 25 points for each program