Calculate how much Radon-222 is left given a time in days, an initial amount in g, and a half-life of 3.8 days. Display the result with three (3) decimal places.
Calculate how much Radon-222 is left given a time in days, an initial amount in g, and a half-life of 3.8 days. Display the result with three (3) decimal places.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Can you please help me answer part C of this question in python. Include screenshots of your code for better understanding. :) (see image)
Transcribed Image Text:c) Calculate how much Radon-222 is left given a time in days, an initial amount in g, and a half-life
of 3.8 days. Display the result with three (3) decimal places.
d) Calculate the shear stress for a given normal stress in Ibf/in^2 that is applred to a material with a
given cohesion in Ibf/in^2 and angle of internal friction in degrees. Display the result with three
(3) decimal places.
Each program should perform the following tasks:
• Print what the program does to the screen
Prompt the user to enter required data from the keyboard. Include proper units in the prompt
as shown in the example output below.
Get the inputs from the user and store in appropriately named variables
Perform the necessary calculations
Output the result to the screen with proper labels and units
Example output (using inputs 20 and 5):
This program calculates the voltage given resistance and current
Please enter the resistance (ohms): 20
Please enter the current (amperes): 5
Voltage is 100 v
As always, please include descriptive comments in your code so that someone may follow your
programming logic.
Expert Solution
Step 1
Python Code for above :
#take initial amount of Randon-222
N0 = float(input("Enter initial amount (g): "))
#take number of days
days = int(input("Enter Number of Days: "))
#n holds number of half-lives
n = float(days) / 3.8
#apply formulla
# N = N0 *((1/2)^n) , N is final amount , N0 is initial
N = N0 * pow ( 0.5, n)
#print amount left after given days
print("Amount left after ",days, "days are : ",'%.3f'%N, "g")
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