How to find the phase shift (the horizontal shift) of a couple of trig functions Graphing Sine and Cosine with Phase (Horizontal) Shifts, Example 2. In this video, I graph a trigonometric function by graphing the original and then applying the phase shift.
Take the electric hot-water heater recovery times and divide them in half to get the recovery time for a gas unit. Water coming into a 50-gallon tank at 40 degrees takes just 53 1/2 minutes to reach 120 degrees. For 60-degree water entering the tank, calculate about 40 minutes needed for the water to reach the 120-degree temperature. For 70-degree water, it would take 33 minutes.
Here are some basic steps to follow when your water is not hot enough: Electric water heater. 1  Make sure that the power is connected. 2  Reset the thermostat. 3  Flush the heater to remove sediment from the tank. 4  Insulate the hot water pipes. 5  Replace the heating element or thermostat.6  Raise the temperature setting on the thermostat.ere are some basic steps to follow when your water is not hot enough: Electric water heater. 1  Make sure that the power is connected. 2  Reset the thermostat. 3  Flush the heater to remove sediment from the tank. 4  Insulate the hot water pipes. 5  Replace the heating element or thermostat.