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.
How much does it cost to install a water heater? A water heater is an important aspect of a home that lasts 10-15 years, not only for the comfort and amenities, but also because it is a major source for energy use. There are many options available when choosing a water heater, and every aspect affects the price. On average, a whole-house tank water heater for a 1,500 square foot home for 3-4 people costs $600-$800. Below, weâll consider some of the options for a water heater, the pros and cons, and how it affects the price.