#!/usr/bin/env python
# coding: utf-8

# In[6]:


# the "^" symbol is called "exclusive or" -- XOR
# we don't really need it, but it is used in COMP 1120
#print("4^7=",4^7)

###############
# Calculate an average
#
# Get three numbers and average them
num1=float(input("What is the first number?"))
num2=float(input("What is the second number?"))
num3=float(input("What is the third number?"))
# find average
average=(num1+num2+num3)/3
# Display 
print("The average of the three numbers is: ",average)


# In[13]:


#TESTING:
print(7201//3600)
print(7201/60)
#####
# Time converter program
# take as input: a total number of seconds
# print as output: number of hours, the number of minutes, and the number seconds
#
# Get the total number of seconds
total_seconds=int(input('What are the total number of seconds?'))
# Find the number of hours
hours = total_seconds // 3600
# Find the remaining number of seconds
remaining_seconds=total_seconds-3600*hours
# Find the number of minutes
minutes=remaining_seconds//60
# Find the number of seconds
seconds=remaining_seconds - 60*minutes
print("There are",hours,"hours,",minutes,"minutes,",seconds,"seconds in",total_seconds,"total seconds.")


# In[15]:


# Example of a math equation
# The Hagen-Poiseuille equation related the pressure difference
# of a fluid between two ends of a pipe (Delta p) to the length
# of the pipe (L) the dynamic viscosity (mu), the volumetric flow
# rate (Q), and the cross sectional area of the pipe (A)
# Delta p = (8muLQ)/(A^2)
# Write a program to compute Delta p given the other variables.
# Get the variables mu, L, Q, and A:
mu=float(input("What is mu?"))
L=float(input("What is L?"))
Q=float(input("What is Q?"))
A=float(input("What is A?"))
deltaP=(8*mu*L*Q)/(A**2)
print("The pressure difference is: Delta p=",deltaP)