You are shopping for a new microwave and notice that the specifications report "Power" in units of "Watts" . This is a bit confusing as you know microwaves are used to "heat" food. In physics class, heat means a transfer of energy into or out of your system and has units of Joules. Luckily, your friend tells you that "Power" is the rate by which energy is transferred. You decide to investigate the relationship between power and temperature change to help you decide how "powerful" of a microwave you want to buy. Specifically, you are wondering what the temperature change of water will be when you heat it with your old microwave at home?