posted by andrea .
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by moisture in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Suppose that the microwave radiation has a wavelength of 11.2 .
How many photons are required to heat 200 of coffee from 24 to 63?
24 to 62 WHAT?