Pressure P (lbs/ft2) in the pipe varies over time. 5 times per hour pressure oscillates from the low of 100 to high of 250 and back to 100. At t=0 pressure is 250.
• Draw the oscillating graph of pressure vs time where time is in minutes.
• Determine the possible formula for P(t)
• Use the formula to compute pressure at time = 15 min.