If your Lincoln Memorial penny has a date before 1982, it is made of 95% copper. If the date is 1983 or later, it is made of 97.5% zinc and plated with a thin copper coating. For pennies dated 1982, when both copper and zinc cents were made, the safest and best way to determine their composition is to weigh them. Solid copper pennies weigh 3.11 grams (+/- 0.130 g.), whereas the copper plated zinc pennies weigh only 2.5 grams (+/- 0.100 g.).
Report Abuse. 1  Vibrations In Abdomen. Source(s): https://shrinkurl.im/a8czv. 2  For the best answers, search on this site https://shorturl.im/awgvM. If by stomach, you mean your abdomen, that's your intestines, and it's probably gas. 3  Sounds like it could just be little bubbles of gas.
Story at-a-glance 1  +. The rumbling sound in your stomach is the result of muscular contractions of your intestinal wall combined with the presence of liquid and gas. 2  Stomach growling is a normal function and one that occurs most of the day, although most of the time you canât hear it.our stomach may make noise when youâre hungry and lacking food in your stomach, but it can also growl when youâre not hungry and your stomach is full. The growling noise may not even be coming from your stomach at all but rather from your small intestines.