No, that sounds like superstition. To keep flies away use gauze in front of your windows, or close the windows, and don't keep fruit around for too long outside the fridge. Flies do not react to pennies in any way, especially not in ziplock bags :P
I am not sure what it has to do with horror movies, unless you saw it in one. But, with or without the pennies, if a bag of water is suspended from the ceiling in a corner or corners of the room it keeps flies away.
You find pennies everywhere because people do not like to keep them and they just throw them away.
lots
The air has some weight. If you take the air out, you take away the corresponding weight.
Yes! Ziplock bags are very effective when sectioning meat to be frozen.
the acid eats away the rust
The citric acid reacts with the oxidation on copper.
The movement of the hand to brush away flies is called the Australian Salute
One of the twins. Whether it was Sam or Eric, the book never really says.
Most likely either Coke or Pepsi .
yes. flies are harmful. I would stay away from them if i were you.
Actually it is their option to accept pennies. It just not very common. There are some countries that "advise" that the acceptance of pennies as payment may not exceed a certain amount after which they are not classed as "legal tender" one such country is the UK where up to 20 pence in pennies is the maximum that is classed as legal tender