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

# In[14]:


print("5-4/2=",5-4/2)
# Python follows the standard order of operations
# Parentheses first, exponents second, mult/div third, add/subt last
print("5*2/2=",5*2/2)
print("3^(27)=",3**27)
print("27^3=",27**3)
print("3**3**3=",3**3**3)
print("(3**3)**3=",(3**3)**3)
print("3**(3**3)=",3**(3**3))
# Bitwise XOR
# print(5^9)
print("7329/(60**2)=",7329/(60**2))
print("7329//(60**2)=",7329//(60**2))


# In[27]:


# Time converter program
# 
# 
# Get the total seconds from the user
total_seconds=int(input("What are the total number of seconds?"))
#print("the type of total_seconds is",type(total_seconds))
# Find the number of hours
hours=total_seconds//3600
# Find 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
# Display the result
print("There are",hours,"h",minutes,"m",seconds,"s in a total of",total_seconds,"seconds.")


# In[29]:


# The Hagen-Poiseuille equation related pressure difference
# of an incompressible fluid between lengths of a pipe (Delta p)
# to length (L), dynamic viscosity (mu), volumetric flow rate (Q),
# and cross sectional radius of the pipe (A)
#
# Delta p = (8*mu*L*Q)/A^2
# Take inputs for the variables L, mu, Q, and A and output Delta p
L=float(input("What is the length?"))
mu=float(input("What is the dynamic viscosity?"))
Q=float(input("What is the volumetric flow rate?"))
A=float(input("What is the cross-sectional area?"))
print("The pressure difference Delta p=",(8*mu*L*Q)/(A**2))