The reflector is the surface of a medium of greater density than that through which the incident sou â¦ nd travels, and it can be the surface of water, or a density-boundary caused by sharp temperature or salinity differences in the sea.
A typical ham and cheese sandwich provides nearly 16 grams of fat. An egg and cheese sandwich provides nearly 400 calories and 20 grams of fat and a peanut butter and jelly sandwich provides about 350 calories (although you can make a healthier peanut butter and jelly sandwich).
Peanut butter is one of the higher calorie spreads you can put on a sandwich. Peanut butter contains about 190 calories and 16 grams of fat per two tablespoon serving. There is very little variation in the calorie count, the grams of sugar, and the fat content of different peanut butter brands.